post #1 of Old 03-24-2013, 10:03 AM Thread Starter
mpatch
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1989 FSJ Wagoneer 
 
Join Date: Feb 2012
Location: Vancouver
Posts: 118
Wiring Harness

My fog lights - radio - reverse lights - air cond. and probable rear defroster dont work. Would you recommend tracing the wires to find the problem or biting the bullet and buying a wiring harness from BJs or some other place. Does anybody have experience in wiring or working with the harness. Would this solve some of my problems? Easy to work with? Ect?

Thanks,

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post #2 of Old 03-24-2013, 10:46 AM
revelc
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1985 FSJ Wagoneer 
 
Join Date: Nov 2011
Location: Tyler
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Check fuses. Check grounds. Check power. Check bulbs. All cheap/free items to check. Then if that doesn't work you can write a check.

Wag Rebuilt 360, 260H, 727, Locked 44, AMC 20, 208, 31" M/T's, 4" Rustys, 2.5" Duals. SOON:SOA SF, 496, T400, Doubler, D60's, 37" M/T's <-TOY
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post #3 of Old 03-24-2013, 10:50 AM
pleontks
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1976 J-Series Truck 
 
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How much money do you have? If you can afford it, it's better just to buy a new one, and you're good for another 30 yrs. I can't afford it, so I trace and replace. I recently did a fsj engine wiring harness from scratch. It was pretty easy.

I'd check your fuses and fusible links, first. Then I'd see if there was power at the fusebox for those accessories, and then start tracing based on that. (either towards engine, or through the cab)

Beauty is in the eye of the jeepowner.
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post #4 of Old 03-24-2013, 11:53 AM
RockRollin
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1990 FSJ Wagoneer 
 
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I agree with the others on this. First see if things are plugged in, have power, fuses good, fusable links. Keep in mind the headlights have to be on for the fog lights to work.... yea guess how I know?

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post #5 of Old 03-24-2013, 01:27 PM Thread Starter
mpatch
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1989 FSJ Wagoneer 
 
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Location: Vancouver
Posts: 118
Thanks guys. Have people find they need to undo some of this wires not to short out others or drain the battery? Just wonderimg why so much doesn't work.
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post #6 of Old 03-24-2013, 02:38 PM
revelc
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Quote:
Originally Posted by RockRollin
I agree with the others on this. First see if things are plugged in, have power, fuses good, fusable links. Keep in mind the headlights have to be on for the fog lights to work.... yea guess how I know?
X2

Also bear in mind that fuses usually don't blow on their own. They usually indicate a wire grounding out, short, or a surge.

Wag Rebuilt 360, 260H, 727, Locked 44, AMC 20, 208, 31" M/T's, 4" Rustys, 2.5" Duals. SOON:SOA SF, 496, T400, Doubler, D60's, 37" M/T's <-TOY
Cherokee Rebuilt 360, 2" Duals, mostly stock. SOON: Hot Street 401, 4'' Rustys, 33" BFG A/T's maybe a T-case to get rid of Q-Track <-TOW RIG
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post #7 of Old 03-24-2013, 03:01 PM
timgr
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1975 CJ6 
 
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Location: Medford
Posts: 473
Unless you've had a fire or other catastrophe, just fix it.

Considering replacing the harness because a few circuits don't work is a gross over-reaction.

Do you own and can you use a multimeter? Can you read the wiring diagram? If not, now's the time to learn.

1) '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps. 2) '82 J20 360/T18/NP208/3.73, KOs, 7600 GVWR 3) '75 CJ-6, 304/T15, PS, BFG KM2s, soft top 4) '95 VW Golf Sport 2000cc 2D
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post #8 of Old 03-26-2013, 07:40 PM
dbabicky
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1975 J-Series Truck 
 
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Location: Wisconsin
Posts: 289
I kind of take a different route. I replaced the complete harnesses in my 70 Bronco and my 81 CJ-5, best thing I ever done. I plan on doing it to my 75 J-10 and my 78 Chief.
Be honest with yourself and look at the age and type of wiring you have in these rigs. The new harnesses are made of far superior wire and shielding and it isn't all dry and brittle.
I used a Painless in the Bronco and a Centech in the CJ. I prefer the Centech out of the two. I'm probally gonna go with EZ-Wiring for the next two. $200.00 and you get a complete 21 circuit harness.

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post #9 of Old 03-26-2013, 10:22 PM
super98lsc
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1999 WJ 
 
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Location: Austin
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if the switches are the culprit or the wires from the main harness into the foglights then the new harness won't fix it. I do agree that a new harness is nice and if your aren't good with electrical work then it may be a cheaper option. Especially if a previous owner hacked it all up with bs "repairs". If you have the skills the items your mentioning should be easy to trace and fix.

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