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Michael Delaney wanna-be
Join Date: Jul 2005
Location: 1K Oaks, CA
Posts: 1,533
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The dreaded burnt trunk light wiring
In a nutshell: Moronic bodyshop pinched the trunk light wire and then voila!....cooked the wires.
 Interior lights and related circuits (clock, horn, ) are inop. The car is driveable and I've been running it around for 6 months with no problems. I have a Bentley manual so tracing the circuits is not a prob...Question: Some wires are cooked so much that there is no insulation on them. When the trunk light wiring fries, is the interior lights/clock/horn circuits the only ones involved? My biggest fear is that other circuits might have been damaged in the harness. As we all know, it's practically impossible to get a hand in there. I've tried cutting apart the harness to inspect but it's difficult. I just don't want to have to remove everything in order to get in there....although if I have to I will. Thanks for any and all replies!
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88 Carrera Cab C.R.A.P. Gruppe Member #7 Last edited by Netspeed; 04-12-2006 at 09:14 AM.. |
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04-12-2006, 07:52 AM
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The trunk light is unfused along with the dash + lights.. It's powered from the light switch. Start there and install a 4w in line fuse.
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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04-12-2006, 12:53 PM
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Michael Delaney wanna-be
Join Date: Jul 2005
Location: 1K Oaks, CA
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So what are the odds that other wires were damaged? Does the cooking happen so fast that other wires aren't damaged?
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88 Carrera Cab C.R.A.P. Gruppe Member #7 |
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04-12-2006, 02:44 PM
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I've not seen that circuit fried.
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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04-12-2006, 08:05 PM
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Location: Northern CA
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Why would you not hold "moronic bodyshop" responsible if responsible? Does not calculate.
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Mark '88 Carrera GPW Sunroof Coupe '82 SC Targa (RIP) |
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04-12-2006, 11:08 PM
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Generally, the wire will be damaged from the point it got pinched, all the way back to the power source. Which other wires got damaged in the process will be hard to predict, as they will be the ones closest to the shorted one, and they will not have been run parallel to the damaged one, all the way through the harness. So there may be places on each wire that are damaged in sections, depending on how close they are to the shorted one.
It's a pain in the ass but maybe your best bet is to buy a used harness and replace it. I have seen the trunk light harness burnt completely, to the point of no insulation remaining on the wire. Problems exist with the glove box light wiring too-everybody ought to take a look at whether or not the wiring for this light is close to the bulb. Other things to be concerned about include possible chafing of the power wires coming off of the battery positive terminal. Recently, I saw a car with a main battery cable short, near a fuel tank. It got hot enough to burn a hole through the inner fender metal and almost fried the fuel tank piping. I examined a couple small power wires on one of my cars last weekend and found several places where the insulation had chafed completely through, exposing the conductors. Not good. JR |
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04-13-2006, 04:02 AM
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Quote:
On the topic of installing fuses, another good precaution is the installation of a fuse in the front condenser blower circuit if your 911's got A/C. |
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04-13-2006, 06:31 AM
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Michael Delaney wanna-be
Join Date: Jul 2005
Location: 1K Oaks, CA
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Quote:
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88 Carrera Cab C.R.A.P. Gruppe Member #7 |
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04-13-2006, 06:41 AM
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Michael Delaney wanna-be
Join Date: Jul 2005
Location: 1K Oaks, CA
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Quote:
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88 Carrera Cab C.R.A.P. Gruppe Member #7 |
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04-13-2006, 06:47 AM
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Wil Ferch 85 Carrera ( gone, but not forgotten ) |
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04-13-2006, 08:27 AM
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Michael Delaney wanna-be
Join Date: Jul 2005
Location: 1K Oaks, CA
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Thanks Wil! Great find!
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88 Carrera Cab C.R.A.P. Gruppe Member #7 |
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04-13-2006, 08:39 AM
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Quote:
see Wil's foreward site above. Also I solder connections.
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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04-13-2006, 11:26 AM
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