So, when I found a green wire coiled up under the passenger side of the dash in my car that was plugged in to a vacuum line for no apparent reason, I figured it was an idiot PO's work. I may be wrong, as it turns out.

At the salvage yard the other day, I found another '77 300D exactly like mine in every way except for having a sunroof. The dash had been pulled, and this is what I saw.



The red arrows point to the wire and the vacuum line it is stuck in to. What the heck is that there for? One end is just cut off and coiled up. The other end is plugged in to a vacuum line behind the climate control panel. Why? Both my car and the salvage yard car have this same ridiculous wire! My brain is going to explode!

Seriously, folks... Anyone know why this exists?

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- K.C.Adams

'77 300D Euro Delivery
OM617 turbo / 4-speed swap
404 Milanbraun Metallic / 134 Dattel MB-Tex

Current status:
* Undergoing body work

My '77 300D progress thread