Cruise Control Wiring Diagram Help
- Thread starter HuskerJeep
- Start date
This is my plug the the middle wire is the red/green tracer and the purple wire with the screwdriver in the pic is spliced to it
in this image you have the original and the bought battery sensor plugs. your not adding a second sensor. You only need one and it is there so use the one that was originally in your jeep keep the original wiring and just add the wire that goes to the clockspring. you need a jumper from the brown/yellow wire on the plug you already had and run it into the Brown/yellow wire on the clockspring. Do not cut the old wire off just splice into it by the Plug for the battery temp sensor. You need a single wire that runs from the Red/light green wire on the clockspring directly to C32 on the C1 plug of the PCM. That is it for wiring the clockspring.
There was already a Red/yellow wire that passed through the original clockspring going to the horn relay. Because the bought plug for the clockspring already had the 3 required wires in it use the bought one. Either pull the wire for the horn relay out of the old one and replace the wire in the bought plug or cut it and solder it to the wire for the horn relay in the bought plug.
You needed to add the 4 pin servo plug by the brake booster where it can reach the servo when mounted. Pin 1 of this plug goes directly to C4 on the C1 plug of the PCM no splices to any other location. Pin 2 goes directly to C5 on the C1 plug of the PCM again no slices to any other location. Pin 3 goes to through the yellow connector C107 to Pin 4 of the stop lamp switch plug (if you want to bypass the yellow connector you can go directly to the stop lamp switch plug and splice into the Dark Green/red wire of the stop lamp switch plug) no splices to any other location. Pin 4 of the servo plug goes to any good ground point in the engine bay.
Everything else wiring wise is already there. So plug in the clockspring install the switches connect the horn and the airbag and reassemble the steering wheel. Plug the servo in and install it. Connect the throttle cables to the throttle body. Install a lamp in your cruise control light socket and test your system. That is it.
If you click on the PDF I linked in message #94 the simplified wiring diagram and follow it you should be good to go as long as your switches are correct for the year of TJ you own and both the switches and the servo function as they are supposed too.
There was already a Red/yellow wire that passed through the original clockspring going to the horn relay. Because the bought plug for the clockspring already had the 3 required wires in it use the bought one. Either pull the wire for the horn relay out of the old one and replace the wire in the bought plug or cut it and solder it to the wire for the horn relay in the bought plug.
You needed to add the 4 pin servo plug by the brake booster where it can reach the servo when mounted. Pin 1 of this plug goes directly to C4 on the C1 plug of the PCM no splices to any other location. Pin 2 goes directly to C5 on the C1 plug of the PCM again no slices to any other location. Pin 3 goes to through the yellow connector C107 to Pin 4 of the stop lamp switch plug (if you want to bypass the yellow connector you can go directly to the stop lamp switch plug and splice into the Dark Green/red wire of the stop lamp switch plug) no splices to any other location. Pin 4 of the servo plug goes to any good ground point in the engine bay.
Everything else wiring wise is already there. So plug in the clockspring install the switches connect the horn and the airbag and reassemble the steering wheel. Plug the servo in and install it. Connect the throttle cables to the throttle body. Install a lamp in your cruise control light socket and test your system. That is it.
If you click on the PDF I linked in message #94 the simplified wiring diagram and follow it you should be good to go as long as your switches are correct for the year of TJ you own and both the switches and the servo function as they are supposed too.
So both of those plugs in this picture are in the new wiring harness. The one on the left that is circled is actuly a female side connector and does not work for the battery plug. Like when I took the original version of this picture my factory battery temp sensor was still under my battery and I had both of those plugs from the new harness.
Sorry it was a long day yesterday and I missed those are the two new ones but if you don't read the first line of my last text completely literally you do infact have both a new temp sensor and the original one in the Jeep you just can not see the original one. Follow the rest of what I typed to get your wiring correct and you should be good. I would cut the wires off the new harness on the other side from the actual temp sensor and splice those into your existing wiring harness.
Additionally I know those crimp on splices are easier and seem to work but they will eventually give problems especially in a wetter environments like under the hood. You should consider soldering all the joints and adding heat shrink. If you want to go a bit further, before I slide the heat shrink over the exposed newly soldered area I put a thin layer of silicone so water is less likely to penetrate after the heat shrink is installed and the silicone dried, it makes for a more secure longer lasting electrical connection.
Additionally I know those crimp on splices are easier and seem to work but they will eventually give problems especially in a wetter environments like under the hood. You should consider soldering all the joints and adding heat shrink. If you want to go a bit further, before I slide the heat shrink over the exposed newly soldered area I put a thin layer of silicone so water is less likely to penetrate after the heat shrink is installed and the silicone dried, it makes for a more secure longer lasting electrical connection.
Got it so cut the new temperature sensors wires and add them to the temp sensor I already have on the battery tray. I got the servo mounted and plugged up with the throttle and the electrical cable now. I’ll be working on it a little more. And normally I use sodder connectors with heat shrink I just used those connectors on the clock spring to avoid cutting the wire as I was not sure if my wiring was correct ( and it was not) I really appreciate all your help!
Don't cut the temperature sensor wires leave the new temp sensor and pigtail intact as a spare make your cut on the harness side like 3-4 inches past the plug.
Then splice those wires into the existing harness. Just make sure you splice the right wire to the right wire it helps to lay the new harness beside the one in the Jeep and do one wire at a time. There is some extra length in the harness for the temp sensors just splice in further back on the original harness say 5-6 inches from the plug to make it easier on you.
Then splice those wires into the existing harness. Just make sure you splice the right wire to the right wire it helps to lay the new harness beside the one in the Jeep and do one wire at a time. There is some extra length in the harness for the temp sensors just splice in further back on the original harness say 5-6 inches from the plug to make it easier on you.
Okay got it. So what about that other harness the one I have ran into the cab right now?
Alright so I added the tap into the battery sensor. And made sure all my ecu pins are in the correct locations got the servo mounted and made the connections at the clock spring better with sodder and heat shrink. The only part that I can not seem to understand in the wiring diagram is this plug. ( the one I had ran into the cab) it is on the same pigtail as the battery temp sensor. These need to tap into where.
Only 4 wires go to the computer and batt temp is already in there
So this plug the Brown/Yellow wire become a Red/black wire and the Red/Yellow (should be light green trace becomes a Red wire correct?
If the the answer is yes and these are the same wires in this next picture then you have a issue with the temp sensor. The colors are not random they are there to make easier it to follow the wiring when trouble shooting. You have tapped the Red/Light Green wire and the Brown/Yellow wire correctly into the clockspring plug in this photo. However in this photo you also brought across the two additional wires, the Red and Red/Black should not be there. The opposite end of the Brown/Yellow that you tapped into the clockspring plug this second photo goes to the Brown/Yellow on the temp sensor (don't just cut it because that wire also connects to the throttle position sensor and the vehicle speed sensor.
Remove the Red wire and the Black/Red wire from the connector above. Make sure the other end on the Brown/Yellow wire gets connected to the temp sensor and remove anyother wire you added to the temp sensor. The Red/light Green wire connects to the new wire you put into the C32 pin spot on the PCM connector.
Not sure if you did not open this file before or having a hard time with the it but if follow the layout your wiring will be correct. The only other two wires you need to bring into the interior besides the two above is the Yellow/Red from C11 of the PCM plug, it is going to tap into the Stop Lamp Switch as indicated pin 3. And the Dark Green wire from the pin 3 of the vacuum servo plug to pin 4 of the Stop Lamp Switch.
When you see a wire describes as Red/Light Green or RD/LG it will always be mostly the first color with a thin line down the side of the second color. The harness the seller sold you had the right colors in it so match those colors to the wires in the vehicle when making your connections. C4 and C5 of the PCM plug stay in the engine compartment and go to pins 1 and pins 2 respectively of the vacuum servo plug.
If the the answer is yes and these are the same wires in this next picture then you have a issue with the temp sensor. The colors are not random they are there to make easier it to follow the wiring when trouble shooting. You have tapped the Red/Light Green wire and the Brown/Yellow wire correctly into the clockspring plug in this photo. However in this photo you also brought across the two additional wires, the Red and Red/Black should not be there. The opposite end of the Brown/Yellow that you tapped into the clockspring plug this second photo goes to the Brown/Yellow on the temp sensor (don't just cut it because that wire also connects to the throttle position sensor and the vehicle speed sensor.
Remove the Red wire and the Black/Red wire from the connector above. Make sure the other end on the Brown/Yellow wire gets connected to the temp sensor and remove anyother wire you added to the temp sensor. The Red/light Green wire connects to the new wire you put into the C32 pin spot on the PCM connector.
Not sure if you did not open this file before or having a hard time with the it but if follow the layout your wiring will be correct. The only other two wires you need to bring into the interior besides the two above is the Yellow/Red from C11 of the PCM plug, it is going to tap into the Stop Lamp Switch as indicated pin 3. And the Dark Green wire from the pin 3 of the vacuum servo plug to pin 4 of the Stop Lamp Switch.
When you see a wire describes as Red/Light Green or RD/LG it will always be mostly the first color with a thin line down the side of the second color. The harness the seller sold you had the right colors in it so match those colors to the wires in the vehicle when making your connections. C4 and C5 of the PCM plug stay in the engine compartment and go to pins 1 and pins 2 respectively of the vacuum servo plug.
After all that I hate to bring this up but I need help too!! I have an ‘04 I want to put cruise on. I have the connectors on the steering wheel behind the dummy switches. No wires to the ecm plug. So I’m assuming I have the correct clock spring and switch wiring but that’s it. What do I need besides the correct switches and the cruise servo?
That’s pretty much it,eBay for the servo,I can help get the servo and cable mounted first
The servo and switches are installed. I was hoping to get a cruise light to come on on the dash after the switches were installed but nothing came on. I guess I’m ready for wiring if your ready to help!
Got the parts on. No cruise light came on after switches. May not even have a bulb. Got any suggestions where to begin?