wire identification

[Chris Metzger]

The previous owner of my 76 911S left a portion of the wiring harness laying in the engine bay, it has 2 brown wires and 1 yellow and black wire contained in a black plastic sheathing. It appears as though at one time the ends were lengthened with 2 white wires and electrical connectors. I think the two brown wires were tied together for the 1 white wire and the black and yellow wire had the other white extension on it. The trouble is, I have no idea where they go. Can anyone help me out here?

Thanks, Chris

[cstreit]

DOes the car have the original engine or modified? Injection or carbs?

[APKhaos]

Brown wires are ground, which leaves you with two wires to identify. If you can describe the location of the harness stub [where this branch originates, or where it emerges into the engine bay, and where it travels from there], then someone with an early car might be able to help. All my doc is 84 and later.
Good hunting!
Tony K

[Chris Metzger]

I should have known a little more clarification would be needed. The car has a 77 2.7 engine with cis. The wiring harness originates from behind the fan where the large wiring harness does. I had to split it open to see what color the original wires were. Could this be to the blower motor?

I'll keep hunting, Chris

[Roland Kunz]

Hello

A fast guess is the fresh air blower.

Black / Yellow ( switched ignition ) and brown ( ground )

Grüsse