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10th March 2009, 20:18
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Wiring diagram for large circular connector
Does anyone have the pinout for the large circular connector that connects the engine wiring loom to the fusebox? I think (actually I know) I have a wiring error and I need to double check the functions of some of the pins.
Cheers
Robin
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10th March 2009, 22:34
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Quote:
Originally Posted by MartinClan
Does anyone have the pinout for the large circular connector that connects the engine wiring loom to the fusebox? I think (actually I know) I have a wiring error and I need to double check the functions of some of the pins.
Cheers
Robin
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I must have it somewhere but in the meantime you might want to take a look here and download one of the booklets...
http://www.armchair.mb.ca/~dave/BMW/
And if I reemeber correctly some of the wire colours change from one side to the other of the connector which is all very confusing!
Last edited by peterux; 10th March 2009 at 22:36..
Reason: additional
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11th March 2009, 07:17
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Yes, the colours do change from the engine side to the fuse box side.
I believe I have a PDF file with the pin out at home - I'll post it up when I get in from work.
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11th March 2009, 07:19
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Me again - just followed Peter's link. They're the diagrams I ended up using, as trying to read the ones in the Bently & the Haynes manuals did my head in.
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11th March 2009, 07:52
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Thanks guys.
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11th March 2009, 16:31
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Thanks just what I needed. All I have to do is find out where I cocked up now and I can get on with the testing.
Cheers
Robin
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12th March 2009, 07:32
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Found the wiring problem. It was a trapped wire in the fuse box. Unlucky for me it had got caught on one of the few sharp edges and it had just pierced the insulation enough to cause a short to one of the headlight relay connections. The wire that was trapped was the Unloader signal from the big circular connector. This is normally grounded and was shorting the headlights to ground as soon as the relay was energized. Luckily I had put a low rating fuse in the feed to the fusebox while testing otherwise it could have been messy....
Robin
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