post #1 of Old 05-02-2011, 10:18 AM Thread Starter
Brifr1231
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1989 YJ Wrangler 
 
Join Date: Nov 2009
Location: Hatfield
Posts: 116
Electrical Problems With 89 YJ

Hey guys I am wondering if any one can help me try to figure this out. Here's my situation or at least what happens most of the time. When I turn the lights on the windshield wipers run and I have removed the dome fuse so the interior lights and radio are disconnected because the radio was turning off whenever I did anything. When I tested for a charge on the body I have 5-6 volts in the body when the lights are on and 1-2 when the lights are off. So somewhere there is a wire putting a charge to the body. I don't know if its a short or a bad ground. Any help is good help. thank you.


MY RIG: 1989 YJ, 4.2l, Black, 4inch Suspension Lift, Bfg ATs around Craigar Soft 8s
-------------------------If it ain't Broke go Break it.--------------------------
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post #2 of Old 05-02-2011, 05:08 PM
JWELK
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1999 XJ Cherokee 
 
Join Date: Apr 2011
Location: Ceiba
Posts: 910
You have a bad ground(s). Check black battery lead, and go from there.
Imagine two light bulbs in series. In your case you have several light bulbs, in series with a bad ground connection. If you measure the voltage between the 2 bulbs you will see a voltage if the bulbs are the same wattage, it will equal 1/2 the supply voltage.
Very good to get as far as you did. Even if the cables look good, take the connectors off and clean with a brush and sandpaper. Oh, the connection is bad between the two points where you measured the voltage!!!

Regards,

Jim W
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post #3 of Old 05-04-2011, 07:10 PM Thread Starter
Brifr1231
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1989 YJ Wrangler 
 
Join Date: Nov 2009
Location: Hatfield
Posts: 116
Hey thanks for the reply I actually figured it out on my own before you posted but you had the same idea. the first thing I checked was the body grounding strap and that turned out to be on a painted surface so scrapped that down to bare metal and cleaned the strap and it was all fixed. thanks for the post once again.

MY RIG: 1989 YJ, 4.2l, Black, 4inch Suspension Lift, Bfg ATs around Craigar Soft 8s
-------------------------If it ain't Broke go Break it.--------------------------
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