dsmith

I don't remember taping this off and can't figure out what it might have gone too. It looks like the connector going to the speed control. It comes out of the harness with the WUR, blower motor connector and rear engine harness connector.

LaughaC

Flux capacitor... sorry, I tried to resist but just couldn't stop my fingers from typing...

JV911

flux capacitor?

JV911

ah beat me to it!

dsmith

that would explain the coffee grounds...

PorscheMD

If your car is an SC with oxygensensor/fuel enrichment control it is a sensor for that system and it should be plugged in.

Peter Zimmermann

Very good chance that it's for a single-stage rear window defroster...

dsmith

It's an 83sc. Aren't the only engine bay wires for the 02 circuit the 1 wire to 02 sensor and the connector to the FV? Both of those accounted for.

Pete,
Where would the other end be? This wire could reach to the driver's side fuse block, maybe to the firewall, and barely above the CIS. I can't find the other end anywhere.

Peter Zimmermann

What's coming out of the upper, left corner of your engine compartment (above the stock position for the engine lid support)? Most of the cars use a 2-stage defroster, with red/blk, red/wht & brown (grnd) wires, and use a connector like that. If that wire was tied to the alternator harness, under the left side intake runners, it also could be a "not-used" connector...

Amber Gramps

Just an outsider looking in here...It looks too dirty to have been pulled on. It has an untouched look to it. No grease, no smudges, and the dust hasn't even been nocked off of it. It had that muddy look to it like you never touched it before. the prongs don't even look like they have been bent recently.

Stevie 77 930

Thermo-Time Valve connection

Peter Zimmermann

I was thinking about this one, while Stevie was writing. I do believe it's unused in the SC application, but used on Turbo engines (not sure if that year car shared the engine harness with the Turbo - no USA Turbos that year). This is one of those, "Darn, I've seen that connector five hundred times, but..." moments.

Stevie 77 930

We'll have to look in the parts book to see if ithe thermo time value is used. I think it was used up untill at least 78, but not sure about anything later.

PorscheMD

OK, I was looking at the temp switch in the breather housing not the plug to the left of the pic. I think Pete is correct. It is not used on the SC's

dsmith

above the lid support are wires that come down to a larger 2 prong connector going into the Hella relay at the rear fuse panel.

It is under the left side intake runners and had tape over it. I guess I'll go with the not used theory, cuz I don't see anything. My friend has an 84 euro 930 i could check.

I have a Thermo Time switch, but it has different connectors.

Thanks all for the help.