Thread: How to tell, absent documentation, if M104 wiring replaced?
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Old 12-23-2002, 02:09 PM
suginami suginami is offline
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Join Date: Dec 2001
Location: Southern California, U.S.A.
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There are many places to check the wiring harness to see if the insulation is flaking off.

One place is right at the the terminations on the thermostat housing you'll see the insulation at the ends coming off.

Another place is where the wires in the plug to the intake cam advance magnet are. It may be necessary to remove the plastic connector from the wires to see the insulation.

You can also take a utility knife and cut the black fabric covering the harness that runs along the fire wall.
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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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