Jeep Wrangler YJ Wiring Diagram

1992 Jeep YJ
1992 Jeep YJ, Image via Wikipedia

Well, here are a few more wiring diagrams for Jeep Wrangler – this time for the Jeep YJ series years 1987 to 1994. The PDF includes ‘body’ electrical diagrams and Jeep YJ electrical diagrams for specific areas like: air conditioning units, typical jeep charging unit wiring diagrams, typical emission maintenance reminder wiring diagrams, front end lighting wiring diagrams and switches, heaters and ignition wiring diagrams.

Jeep YJ Wiring Diagram

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14 Responses to “Jeep Wrangler YJ Wiring Diagram”

  1. Is it just me or is there no PDF linked?

  2. Hi Austin, good catch! thanks for that, I somehow missed the link! If you click the image now, it will initiate the pdf download! Cheers!

  3. gordon jessup on March 1st, 2009 at 10:30 pm

    My son has a 94 wrangles and we are putting in a new stereo, the one in there now is a an after market one and the wiring has already been “altered” I need to get a diagram of the wiring for the radio and speaker hook up color coded to know which ones go the which. It is working kinda the way they had it already but the radio will quit powering the speakers but if you unplug the speakers and plug back in they start again, so I think we just need to start from ground zereo and rewire them but we need to know which ones go where.Any help would be greatly appreciated

  4. Hi Gordon, I will dig around and see what I can see. My guess is that there are only a few wires that make sense. If you can’t find the actual wiring diagram you need, and you do have a simple voltage meter you should be able to figure it out.

    Start with the Speakers and where they are located: If you go to the speakers and find out the colour of their wires, that will help when you go to wire up the stereo itself.

    That really only leaves a few wires under the dash to worry about. Usually there is :
    1) power – solid red is a good guess, remember it will only work if the ignition is on (well, that is if your power source is pulled from the ignition or not. It is possible to pull power that is ‘always on’ if you can find a wire under the dash, again, your voltmeter will come in handy here)
    2) ground – again, solid white is a good guess
    3) speaker wires – probably 4 sets of right/left/front/back, but if you identified the wires already, you will know which ones are which.
    4) sometimes there is a need on the stereo for a power antenae, use the same source as your power – should work.

    I am hoping someone who knows stereo wiring better than me comments back for you! I will also see what I can find.

  5. I’ve put an 87 YJ 4.2 L into an 88 YJ, problem is the wiring doesn’t match up. Does anyone know how to do the wiring? I have the wiring harness from the 87, the 87 comes with a starter without a solenoid on it. I have a universal solenoid for it. Will this work?

  6. I have a 1999 Jeep Wrangler. The windshield wipers stopped working. Checked the fuse and it was blown. Replaced the fuse and it blew as well. Any information on trouble shooting the problem?

  7. i have a 1995 jeep wrangler yj and my rear window defog does not work i checked the fuse box under dash and in the hood dont find the fuse under what is it on ?

  8. My heater is not working and i’m looking for the wires to see if there is power. it is a 89 jeep wrangler yj. and i can’t find the fuse box,can you help me? thanks

  9. Hi Greg,

    I had a similar problem on my 92 YJ. I couldn’t locate an 89 YJ manual, but had a 91 YJ previously and perhaps this info from the 91 and 92 models will help with your 89. Small fuses are found in a panel stuffed under the dash/instrument panel to the left of the brake pedal.

    The bottom right fuse (25amp) controlled the heater blower switch in my 92 YJ. The switch is found behind the on-off lever by removing about 5 screws holding the part of the dash covering the guage windows.

    The fuse was fine, and the wire between the fuse box and the switch was in tact on both ends, but the switch had gone bad and no longer activated the blower when you raise the ‘on-off’ control lever. On a 92, it can run about $12 or $45 at the dealer depending if the switch has 3 or 4 contacts — both versions having been installed in certain 92′s! Hope this helps.

  10. i have a 94 wrangler and i lost power to the coil and the fuel pump and can’t figure out why. any answers?

  11. [...] Jeep Wrangler YJ Wiring Diagram __________________ For SAIL, Best looking YJ around. Installed an aluminum Silla, not perfect, but the closest fit currently available. [...]

  12. Just swapped in a 350 chevy with 700r tranny in my 89 wrangler. Looking for a engine wiring harness to clean up the mess. Any ideas. The engine is carbed.

  13. Hey Manny, good swap! Lots of torque. Check out Painless Wiring they are a great resource and probably have what you are looking for or at least can point you in the right direction (I am not affiliated in any way with them, I have just heard good things from other people)

    Good Luck!

  14. Thanks for posting the info. Is this from the FSM or where?

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