Great deals on TJ parts on Amazon!

Looking for parts for your Jeep Wrangler TJ? Checkout the selection of TJ parts Amazon has to offer, many with 2-day Prime shipping!

Click the image below to browse TJ parts on Amazon.

Jeep Wrangler TJ Parts on Amazon

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.

Mystery wire

brb

2002 TJ
Supporting Member
Joined
May 29, 2022
Messages
4
Location
Brooklyn NY
Hello, I am new to the form and excited to spend time on here as I begin to work on my Jeep. This is my first post. Quick story, I bought a 2002 TJ in 2007 when I was in high school and it was my daily driver until 2019 when it was hit by another car. The damage was not so bad but the insurance company gave me a check so I decided to keep the car and work on it.

Now, a few years later, I finally have some time and a place to do some work. I am generally mechanically inclined (mech. engineer day job and school) but I am learning more about working on cars, what better place to start then my beloved 2002 TJ. I just crossed 100,000 miles last week. I am the second owner.

I have begun working on some low hanging fruit and will work on larger projects as time goes on with the help of my friend who is a mechanic.

One of the things I have noticed off the bat is a mystery wire that seems to have been added at some point. It runs from the positive side of the fusebox and connects to a relay behind the glove box. My hunch is it is for the blower, perhaps on a repair I can't remember. I never really had any electrical accessories to the car except a radio.

The wire has an inline 30amp fuse that looks like it blew years ago. Anyone have any indication on why this wire is here and what it may be going? I'd like to remove it, I think. It starts at the fusebox, goes through the body and joins in with this red wire green stripe on a relay.

wire 2.jpg


wire 1.jpg
 
OP
brb

brb

2002 TJ
Supporting Member
Joined
May 29, 2022
Messages
4
Location
Brooklyn NY
Yea, I agree. But I will say it only goes to this relay. I am having a hard time ID'ing this particular relay. Any chance you know what this relay is or if there is an easy way to look up?

I look at the wiring prints but I am not sure where this is in the chain.
 
OP
brb

brb

2002 TJ
Supporting Member
Joined
May 29, 2022
Messages
4
Location
Brooklyn NY
Actually, I am pretty sure it is the blower motor relay. But with the fuse out of the equation, all of the functions of the blower still work.
 

flyinfish

Woke Is A Joke!
Supporting Member
Joined
Aug 31, 2019
Messages
970
Location
Oregon
Time to pull that wad of plastic off the wires and get to where the relay base pigtail wires connect to(usually about 6"). Then you can follow those wire colors to wherever they go. It's probably a generic 4-pin relay and won't give you any useful info on what it powers.
 

dw0783

Member
Supporting Member
Joined
Mar 23, 2022
Messages
63
Location
Michigan
Based on the colors I’m seeing of those wires it does look like the blower motor relay.
24E25CF9-6F31-4A16-84C6-C5032166A4C4.png
 
OP
brb

brb

2002 TJ
Supporting Member
Joined
May 29, 2022
Messages
4
Location
Brooklyn NY
Thanks dw, my best guess is that a mechanic at one point troubleshoot this possibly incorrectly and added the wire in question as a replacement for A111.

The inline fuse was completely blown so it seems that the original A111 is still connected? Blower works, I just replaced the resistor card for the multi speed blower, seems to be working fine in heating and cooling modes.

I very much want to remove this wire, I guess I could disconnect it but leave it for a while to see if anything acts up...