How to Factory Wire Your TJ for a Hardtop Part 1 (Dash Harness)

GoldenEagle

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Anyone know if I can use a full tub harness from an 06 auto on my 06 manual? It's fuse block and all so I am hoping it will be a pretty straight forward swap. Not sure if it's a 3 or 4 speed auto incase that matters. At worst, I figure I'd have one plug going to nothing assuming it works everywhere else. Neutral safety switch is the only thing coming to mind, buy I feel like I could retain it from my harness.
 
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Jamison C

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Anyone know if I can use a full tub harness from an 06 auto on my 06 manual? It's fuse block and all so I am hoping it will be a pretty straight forward swap. Not sure if it's a 3 or 4 speed auto incase that matters. At worst, I figure I'd have one plug going to nothing assuming it works everywhere else. Neutral safety switch is the only thing coming to mind, buy I feel like I could retain it from my harness.
When you say “full tub harness” which harness(es) are you referring to?
 

GoldenEagle

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When you say “full tub harness” which harness(es) are you referring to?
Looks like everything. Dash and rear tub section. Could be wrong
3299_448557_01_web.jpg
 
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Jamison C

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Looks like everything. Dash and rear tub section. Could be wrongView attachment 220803

So on 03-06 models the fuse block was integrated with the harness running to the rear. You’ll still need the harness that controls your gauges, radio, HVAC, because the wiper/defrost switches are in that harness as well. As far as the NSS goes, you’ll have to consult the factory FSM if you want to retain it. Shouldn’t be hard to splice in.
 

GoldenEagle

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So on 03-06 models the fuse block was integrated with the harness running to the rear. You’ll still need the harness that controls your gauges, radio, HVAC, because the wiper/defrost switches are in that harness as well. As far as the NSS goes, you’ll have to consult the factory FSM if you want to retain it. Shouldn’t be hard to splice in.
Ah. So this is just the rear portion? Thought some plugs we missing. I saw a post from Chris with the FSM download, so I'll dig into that. But it sounds like there's no compatibility issue then as far as this being for an auto. Just need the dash harness. Some other wrecking yard has a Rubicon harness and I may go that route for future e lockers.
 

LJtheunicorn

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I know this is a factory wiring thread but is there another thread where you can hook up defrost and wiper with aftermarket wiring? or some other means to do this? Purchased n 04 LJ yesterday that was a factory soft top but came with both tops.
 

GoldenEagle

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I know this is a factory wiring thread but is there another thread where you can hook up defrost and wiper with aftermarket wiring? or some other means to do this? Purchased n 04 LJ yesterday that was a factory soft top but came with both tops.
General consensus on that is no one has a write up for it and you'd need to look at the FSM, there's a thread to download it from. From what I have seen in other threads, some people just opt to run inline fuses and stay away from the panel.

see:
 
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Jamison C

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I know this is a factory wiring thread but is there another thread where you can hook up defrost and wiper with aftermarket wiring? or some other means to do this? Purchased n 04 LJ yesterday that was a factory soft top but came with both tops.
General consensus on that is no one has a write up for it and you'd need to look at the FSM, there's a thread to download it from. From what I have seen in other threads, some people just opt to run inline fuses and stay away from the panel.

see:
Sorry I didn't see these until now. Yes you can add your own wires to make the equipment work, and it's better to use your own inline fuses. You can also de-pin the wiring you need from a donor harness and pin it directly to your current harness. Certain members have gone this route but I can't remember who off of the top of my head.

Jeep/Mopar used to make kits that allowed you to add wiring to your jeep if it didn't come with it originally. They used the same color wiring that was present if your jeep was factory wired. Here's a set of instructions from what I believe is a 97-99 wiring kit:

If you could find a set of instructions from an 03-06 model year and have the factory FSM present, you could reverse engineer the harness based off of what they tell you to do with each color wire and cross reference that with the FSM. Hope this helps.

*EDIT*
With a little detective work I found the instructions for the 03-06 kits:
 
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woody367

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Hey guys, I installed everything and it turned out my fuse box on my 97 was already wired for it. Problem is the rear wiper does not work. I tested it at the wiper and I have power for park but not to run wqiper or ground. I tried another switch am same thging. Any thoughts?
 

DEValken

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Check your fuse panel behind the glovebox and the one under the hood. Mine was missing a relay (for the defrost) and a fuse for the wiper.

EDIT: and check that there is power on both sides of the fuse behind the glove box. Someone had the dash harness wired for a hardtop but the panel itself wasn't wired hot.
 

Gilly11277

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Can anyone tell me if this would work on my 05? I have the newest TJ hardtop and the Wrangler is an 4.0L I6 with auto transmission (42RLE). From what I gather, the O/D switch might not come on this but don't know for sure. Hoping my more experienced Jeepers can tell.

 

Wayfastwhitey517

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Hey I have a 97 tj and snagged a dash and tub harness out of a 2000. The obvious difference is the 2000 has the nice knob HVAC where I have the temp slider and cable. Is it worth trying to remove the needed wires from the 2000 harness and re-pin them into my harness kind of like the mopar one would of?
Thanks
 

Gilly11277

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Can anyone tell me if this would work on my 05? I have the newest TJ hardtop and the Wrangler is an 4.0L I6 with auto transmission (42RLE). From what I gather, the O/D switch might not come on this but don't know for sure. Hoping my more experienced Jeepers can tell.

Disregard. I was able to figure it out.
 

Manny68

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Hello all,

Today we're going to talk about making your jeep hardtop ready with factory wiring, and how to narrow down what you need to make this work with your year of jeep. I am going to do this in two parts, dash, and rear tub.

PART 2 IS UP:
How to Factory Wire your TJ for a Hardtop Part 2 (Rear Tub Harness)

It's no secret to us that Jeep didn't install factory hardtop wiring for all of our TJs. This only came installed if your jeep was ordered from the factory with a hardtop or dual tops. They did however sell add-on wiring harness kits for about $150 if you wanted to add the wiring down the road. These kits have sold out and are no longer available which leaves you stuck if you added a factory hardtop and want all of the features to work. These features would be a rear defroster and a rear wiper/washer.

This conversion is fairly simple. You will need two harnesses to make this work :

1). A factory rear tub harness with wiring for a hardtop
2). A factory dash harness with wiring for the defrost and wiper switches.

In addition you will need:

Factory rear defrost switch
Factory rear wiper switch
Dual pump washer reservoir with pumps
30A relay for HBL in PDC
40A maxi fuse for HBL in PDC
10 A fuse for HBL in fuse block
20A fuse for rear wiper in fuse block

We're going to focus on the dash harness today. The dash harness is known as the HVAC harness, which is split into two parts.
View attachment 62270
Side 1:
Red, green, and grey 100-way connectors
Grey 10-way connector going from fuse block to PDC (power distribution center)
IPC #1 and #2 (instrument panel cluster)
Left front speaker
Left courtesy lamp
OBDII port
Left side ground
View attachment 62272

Side 2:
Radio
Blower motor
HVAC various electrical
AC compressor
Any factory rocker switch (rear defrost, rear wiper, fog lights, OD, axle lockers)
Cigarette lighter
Right courtesy lamp
Right front speaker
Green 10-way connector going from fuse block to PDC
Right side ground
View attachment 62273

Now that we've determined what exactly goes on this harness, we need to determine which one you need based on your year. You will need to find these harnesses from salvage jeeps. I sourced my dash harness from ebay (rayswranglers) and my rear tub harness from deadjeep. Ray mentioned to me that some early models may need the fuse block harness too, and that not all early models had the fuse wiring ready. My guess would be models that didn't come factory with the hardtop, but it's hard to say. If your fuse block doesn't have the wiring in them, I'll do a separate thread on how to wire the factory switches on your own.

I know that all 01-06 models had the wiring ready for the fuses. For you early models, best way to check is to see if the slots have a fuse in them, or at least the metal prongs like in the photo below.
View attachment 62275
If the corresponding slots are blank, you're going to have to get creative. Otherwise you would have to replace this harness as well. The additional cost and the effort to rip out the dash IMO is not worth it at that point.

Now let's figure out what harness is best for you. Some listings will say "with AC" or "without AC," but don't worry about this. Even though all TJs did not come with AC, they were all wired for it. So whether you have AC or not is not a big deal, the big deal is what factory rocker switches you have.

97-00 - If you have factory fog lights, they will be on a rocker switch below your HVAC, which means you'll need a harness with rear defrost, rear wiper, and fog lights. 97-98 will need the slide-style-HVAC harness.

01-02 - We have it easiest. The fog lights were integrated into the multifunction switch, and if you have the 3-speed automatic transmission, you won't have an overdrive switch either. So you need a harness with only the rear defrost and rear wiper.

03-06 - This will probably be the most complicated harness to source if you have the 4-speed auto and/or a Rubicon. If you have an automatic you will need a harness with the overdrive switch, and if you have a Rubicon you will need a harness with the axle lockers, in addition to needing the rear defrost and rear washer switches. Here's an example of a an automatic Rubicon with factory hardtop wiring (swiped from another thread for reference).
View attachment 62282
While I didn't see many of these 03-06 harnesses available on ebay, there are a plethora of wrecking yards across the country with jeeps that you could source these harnesses from.

*NOTE* Some models came with the basic stereo and some came with the 7-speaker premium stereo. My Jeep has the 7-speaker one but the harness I received was equipped with the standard, so the front speaker plugs did not match up. They're very easy to pop open and swap out terminals.

Ok, now that we've determined what harness your jeep needs, let's swap out the old one with the new one. Removing the entire harness and trying to put the new harness in the empty spots might prove challenging to some, so the best way to do the swap is to plug in your new harness as you unplug your old one. You can do this swap without removing the dash, only certain parts.

Remove your defrost trim, center bezel, glovebox, kick panel under the wheel, your IPC housing, your IPC, radio, HVAC, switch bezel, and both the left and right speaker covers. Your dash should now look something like this. I'm not going to go into how to remove all these parts since there are 100s of threads out there on how to do it.
View attachment 62283
In white, I have traced the outline of how the harness runs through the dash. As you can see. it's very straightforward. Whenever you're working with electrical like this, you should always disconnect the battery. Next, unscrew the grounds from the metal dash frame, located beneath each front speaker.
View attachment 62284

View attachment 62285

When removing your HVAC, it's easiest to disconnect the vacuum lines at the plug by the
fuse block rather than unscrewing the switch from the back of the unit.
View attachment 62286

This is where the fun begins. We're going to start with side #1. Start by removing the grey, green, and red plugs from the top of the 100-way connector. The 100-way connector is below the dash by your left leg.
View attachment 62287
These connectors are the core of this harness, everything you trace and follow starts here. Plug in the connectors from your new harness the exact same way. They will only plug in one way despite looking symmetrical, so don't worry about getting them upside down. Just don't plug them into the wrong color spot.

I couldn't get a good shot of it, but behind the 100-way connector close to the firewall is the grey 10-way connector. Remove this connector and plug in the new one. FYI this has the little red safety lock on the plug
Once you have these plugged in, there will be four little wires veering off to the left from the old harness, ground, speaker, courtesy lamp, and OBDII. Simply follow where the existing wires go, remove them a plug at a time, and run the new wires in their place. The OBDII port does not plug in but is simply fastened to the dash by two screws. Unscrew the old one and screw the new one into it's place.

Next up is the IPC. This loom runs up the left side of the steering column. There might be a couple of small wires zip tied to this loom (in this picture they're to the right). Just cut the ties and let them hang for the time being. Here's the IPC loom.
View attachment 62298
When you've reached the plugs, you'll notice the wires are held into place by two wiring harness clips with the christmas tree style inserts. Pop those out of place and the wires will come free.
View attachment 62299
At this point you can pull the loom out and down below the dash, and route the new loom up in it's place. My new harness already had the harness clips in place. If yours doesn't, you can reuse the old ones and use electrical tape to hold them into place on the harness. You'd be surprised at how durable the plastic is. Also, remember to zip-tie those little wires below the steering column back to the loom. You can also go ahead and plug the IPC back in, and mount it into place.

Congratulations! You have finished side #1 and the old harness should be laying on the floor like this. You're halfway done. Now's a good time to grab a beer ;)
View attachment 62300

Now, your harness runs through a narrow channel underneath the dash to the other side. Pictured is side #1.
View attachment 62302
It is held into place on side #1 by three wiring harness clips, their locations are circled. The clips look like the ones pictured below.
View attachment 62303
As you're pulling the harness out of it's channel, odds are the tape holding the clips to the harness will give way and leave the clips in their place. Not to worry, grab a pair of needle-nose pliers and yank those puppies out. Again, they are extremely durable and could probably be re-used if your new harness did not come with them attached. Or you could buy new clips and play it safe. The tape that was holding them should still be on the harness, use that tape for reference when attaching the clips to the new one (if needing attached). Use electrical tape. Go ahead and mount the new harness into place, securing it with the clips.

On to side #2.
View attachment 62325
At this point you have completely freed side #1 and attached the new harness into it's place. Now you will need to remove the wiring harness from side two. It's easiest to just pull the harness loose from the clips, and remove the clips after. You will notice one with PITA next to it. This clip is extremely hard to reach, but it's doable.
View attachment 62309
Once the clips are removed, attach them (or your new ones) to the new harness if no clips are present. Now you can start removing the rest of the old harness. Disconnect the green 100-way connector. This has the same red safety clip as the grey plug on side #1.
View attachment 62313
If you follow the main harness all the way to the right, you can also unplug the right courtesy light, right front speaker, and unscrew the little ground below the speaker if you haven't done so already. You can pull this section of the harness out and let it hang below the dash.

Then pull the HVAC/radio loom from the dash.
View attachment 62316
This loom is held into place by another harness clip which is easy to pop out. On the new harness, this loom is what will contain the wiring for all of your factory rocker switches, as well as the new hardtop switches.
View attachment 62317
This clip is located on the upper left hand side of the glovebox cutout.
View attachment 62318

You should now be able to remove the entire harness from the jeep and out of the way. You will be left with the new harness on the floor like this.
View attachment 62326
Go ahead and start routing the main harness through the channel at the bottom of the dash, pushing the harness clips into the place of the old ones (they should be taped to your harness at this point). Reconnect your green 100-way connector as well as the courtesy light, speaker, and ground.

The only loose wiring you should be left with now are your HVAC, radio, and switch wires. Go ahead an pull these through the dash where you removed the old ones.
View attachment 62327
You will notice you have a couple extra plugs on this harness. In my case, these were just for the rear defrost and rear wiper switches. Pull these through the little hole below the left side of the HVAC cutout.
View attachment 62328

Go ahead and reattach your radio and HVAC plugs, and fasten the two units back into place. Remember that your vacuum lines are already attached to the HVAC unit.
View attachment 62330
Route your vacuum lines back down and behind where the glovebox would go, and plug it back into place. These lines hang freely and there is no clip to secure them into place.
View attachment 62331
Grab your switch bezel and remove the the first two blanks. Insert your new (new to you) defrost switch in the left-most spot, and the rear wiper switch right next to it. Go ahead and plug them into place along with the cigarette lighter, then reattach the switch bezel.
View attachment 62333
At this point, your new harness should be entirely installed and fastened into place. Go ahead and reattach your battery to make sure all of your electrical components are working. Make sure the grounds below the speakers are secured tightly. If everything checks out, go ahead and put your dash back together!

Last step to the dash conversion is installing the proper fuses in the fuse block and PDC. Different years had different style fuses and locations. Reference your fuse block and PDC diagrams for the correct spots. Rear defrost will be listed as HBL there is one spot for it in your fuse block, and two in your PDC. There is only one spot for the rear wiper and that's in the fuse block.
View attachment 62336

View attachment 62335
This is where you will need your 30A four-prong relay and the 40A maxi-fuse for the HBL in the PDC.
View attachment 62337
Insert them into the appropriate spots.
View attachment 62338

View attachment 62339
Now go check your finished product.
View attachment 62340
There's no way to test the wiper until the hardtop is plugged in. However you'll know if your HBL is working. Your HBL sends a signal to the IPC which has a timer built into it. When this timer is activated, it sends a signal to the relay in the PDC to open power to the rear defrost. This timer shuts off after ten minutes, and will run an additional five minutes if you hit the switch again. I heard the relay click when I hit the switch, and it clicked and shut off after exactly ten minutes. Hitting the switch again, it shut off after exactly five minutes. It works! My rear wiper switch was good too the light had just burnt out. If you've made it this far, you're all done!

*WARNING* You may feel an overwhelming sense of pride after finishing this install. Like the kind of pride you feel cracking open a beer whilst gazing upon the Stars and Stripes, or when a Bald Eagle soaring above screeches into the wind, or when you're slamming 30 rounds of 5.56 downrange from your American-made AR15.

Or, the feeling of pride you get after finishing another testy install on your Jeep Wrangler TJ :)

Part 2 (rear tub harness) is now up! Link at the top of the thread.

Hi would you be able to tell me where you connected the grey 10 way connecter? I see it in your photo connected to something but can't tell what it is, I've been searching a bit for some info on this and I can't seem to find any.