What does this plug connect to?

[kltarga72]

Getting ready to reinstall the engine in my 1980 SC. Making a check list for all electrical and fuel line connections that need to hooked up as I reinstall the engine. I cannot figure out where this two prong connector goes. It is on the left side of engine, one brown wire and the other is red/white. It looks like it goes to the other side of engine to the supplementary air valve. Looking in the Bentley Manual page 970-8 lower right corner it shows the valve with the same colored wires.

So where on the left side of engine bay does it connect to???

I was going to make a continuity check at the valve but was not able to disconnect the plastic plug from the valve, did not want to break the plug.

[timmy2]

Not used after ‘79 on US models. Just tape it up and tuck it out of the way.

[kltarga72]

timmy2

Thanks, after looking at the cable closely I could see where it had been folded and wire tied. Must be the mechanic that did a top end job cut the tie.

Lash

[timmy2]

Factory just covered the terminals with tape 0n the flats, then a wrap around to secure the tape, then tucked them out of the way.

[911tracker85]

as I was helping a friend resurrect his 84 944, commented that he will occasionally find connectors not plugged into anything. they may be for things / features your car does not have. as long as all the major things work.

[carsinc]

Could be plug for remote voltage regulator which was used on early CIS cars. Later Cis cars voltage reg. were integrated.

[timmy2]

Dan, it is used on 78/79 SC’s (and ROW cars after) for the vacuum time delay switch.
80-83 Lambda cars didn’t use it, but Porsche only built one engine harness for all SC’s with Lambda or without Lambda.

[911 SLANT]

Looks like the Blower motor plug

[timmy2]

Originally Posted by 911 SLANT

Looks like the Blower motor plug

It’s not....

[theiceman]

goes here on early CIS cars ( mine is 78 )