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Unread 12-01-2013, 11:53 AM   #1
Registered User
1989 YJ Wrangler 
Join Date: May 2007
Location: Annapolis, Md
Posts: 124
Wiring harness cleaning

I am doing a frame off resto on my 89 YJ 2.5. Wondering what other people have done to clean up their wiring harness. I have almost the whole thing pulled off the jeep and wires are black, and looming is back. I will get new loom but want to clean up all of the individual wires inside as well. What all have you done to clean the grease and grime off wiring and connectors? What kind of solvent or cleaner is safe to use on these pieces.

1989 Jeep YJ
2.5 - AX5 - 4" RC lift

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Unread 12-01-2013, 04:31 PM   #2
Registered User
1989 YJ Wrangler 
Join Date: Nov 2010
Location: Sin City, Nevada
Posts: 2,881
If you want something environmentally safe and won't screw with the insulation on the wires try some Simple Green. It is a degreaser but has no bad chemicals. Mix at 50/50 and you should see good results. You will have to wipe dry. I suggest using a spray bottle. I buy it by the gallon at Costco.
89YJ 2.5L TBI, AX-5, NP231 SYE, Ford 8.8, Yukon Grizzly, Tom Woods Shaft, 33" BFG T/As, 4" lift, Warn VR10000s.

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Unread 12-02-2013, 07:21 AM   #3
Web Wheeler
1989 YJ Wrangler 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 19,406
Alcohol and contact cleaner. Get some dielectric grease on the connectors as you are putting it back together get it on every single connector to stop the corrosion.
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