1991 BMW 525i 1991 525i engiene wire harness

1991 BMW 525I
220,000 MILES • 6 CYL • 2WD • AUTOMATIC
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FLYBOY97222
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I have now burned threw a second engiene wire harness. the hottest wires seem to be coming from the wire box attached to the firewall in the center of the engiene compartment.
The hottest wires are White/yellow and White/purple. They start at the DME and end at the diagnostic plug.

can anyone point me to where I can find info on what these wires control? I'd like to find the source of the short so I don't burn threw a wire harness again.
May 31, 2010 at 9:46 PM
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MHPAUTOS
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Hi there, Thank you for the donation, i have located the system for you, see pic, now this is a bit out of my comfort zone, so i will pass this post on to a mod with specialist BMW knowledge.


https://www.2carpros.com/forum/automotive_pictures/61395_Capture_14.jpg

mark (mhpautos)
May 31, 2010 at 10:11 PM
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DOCHAGERTY
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Thanks Mark. Flyboy, can you send the last 7 of the VIN for reference and positive ID?
Jun 1, 2010 at 4:27 PM
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FLYBOY97222
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[quote:90786356d0="Dr. Hagerty"]Thanks Mark. Flyboy, can you send the last 7 of the VIN for reference and positive ID?[/quote:90786356d0]

BJ66417

the entire vin is

WBAHD6318MBJ66417

thanks and I have a cat that looks like your avatar!
Jun 1, 2010 at 5:49 PM
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DOCHAGERTY
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What do you mean by hot? Where is the burning at in the harness? What precipitated the failure? Was the car in an accident? I'm trying to get to the root of the problem and gather information to give a reliable response, there might be something simple that is being overlooked.
Jun 1, 2010 at 11:17 PM