Mystery wire ??

[flatsixguy]

Hi Gentleman

Just did my first engine drop to clean up a few annoying leaks on my 1980SC US spec.

The cold start valve has 3 wires coming out of it, 2 go to the thermal switch mounted in the left chain case but the Yellow with Blue stipe is puzzling me any ideas??

maybe starter relay/solenoid??


cheers


Michael

[timmy2]

Terminal 16 on the starter solenoid.
Used to energize the entire CSV and TTS circuit

[flatsixguy]

thanks Dennis

[flatsixguy]

another wire I'm trying to work out is the BLUE coming off the small 6 pin harness that has the throttle position switch and two other plugs on it.x

thanks in advance

Michael

[timmy2]

Likely the temp sensor on the right chain case. (If it is long and a single connector on the end)

[flatsixguy]

This is the loom in question? link attached below (hopefully it works) my engine doesn't seem to have any sensors on the right chain case Dennis


https://www.dropbox.com/s/rfyo9v3aewbseyf/IMG_1607.JPG?dl=0

[timmy2]

That is the wire to the passenger side chain case temperature sender.
Should be in same mounting area as the TTS sender on Driver’s side.

To post photos click go advanced then scroll down to “click here to upload photos and follow instructions.
Screenshot:

[flatsixguy]

hmm mine is blanked out with a large bolt on that side photo attached thx for the tip do some models come without this sensor?

[Flat6pac]

That’s part of the lambda sensor system under the passenger seat.
Bruce

[flatsixguy]

cheers Bruce, so where will i need to connect the ring terminal on this blue wire ?

[timmy2]

Your picture.

[timmy2]

That wire connects to the missing sensor on your chain case.
The 6 pin connector plugs into the female plug on the top left area in the engine compartment above the torsion bar. From there it runs to the Lambda box under your seat.

All Euro and ‘78/‘79 US models did not have Lambda, so not used on those.

[flatsixguy]

really appreciate all this info, so should i reinstall this harness back and just not worry about the missing sensor and connection?

[timmy2]

It is a temperature switch for controlling mixture until it warns up to a certain temp.
That is about all I know about it.

If it were me, I’d ditch all of it (CIS) and install EFI...
Oh yeah, I already did that 7 years ago....

[flatsixguy]

i think eventually that will be the path l take ..