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Is fixed (??)
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Posted by Baab [Email] (#1214) [Profile/Gallery] (more from Baab) on Sat, 8 Jun 2002 16:22:42 Share Post by Email
In Reply to: Re: Short circuit killing exterior and dash lights, IrieTom [Profile/Gallery] , Sat, 8 Jun 2002 14:34:08
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Well, it appears to be fixed, sort of.

I started out by trying to isolate which part of the circuit was causing the problem. First disconnected wiring from all exterior lights. Fuse still blew out. Checked wiring going to the light sockets and all seemed OK, no visible problems with insulation or shorts

Then I isolated the instrument panel from the circuit by cutting the green wire going to pin #3 of socket 152B under the instrument panel. (The Bentley manual showed this as feeding the dash lighting circuit.) Tried turning the lights on and the fuse didn't blow out! So it appeared the short was somewhere in the instrument panel.

Looking further at the wiring in the Bentley manual I could see that the dash wiring could be split at one of the rheostats to isolate the instrument lights from the control lights. Hooked the main feed up and disconnected the control lights. Fuse did not blow!

So it appeared the problem was in the lighting circuit for the instruments. I tried hooking that side of the circuit back in as a further check -- and the fuse still didn't blow (!?), and the lights seemed to be working, though that's hard to tell for sure in broad daylight.

At this point things were getting confused so I hooked all the circuitry back up to test again, and the fuse still was not burning out.

I kept trying to jiggle wires around and the fuse still would not blow. So what I wound up doing was to tape off all unused connectors as a safety measure and put everything back together -- and it all works OK now with no fuse problems.

So it's "fixed" but I have absolutely no idea why, or how long it's going to stay that way. I always get nervous when things seem to fix themselves...



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