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914World.com _ 914World Garage _ What, Where?

Posted by: Eck Aug 6 2011, 08:26 PM

Where does the wire I have circled go? It wasn't attached to anything so I'm trying to figure out why it wasn't attached and where it should go.

Thanks
Kirk

Attached image(s)

Posted by: swl Aug 6 2011, 08:31 PM

I believe that goes to the cold start thermoswitch. Visible in this picture on the bottom left of the plenum. Just behind the coldstart valve itself.
http://www.914world.com/bbs2/index.php?act=Attach&type=post&id=269525

Only used in very cold weather - around freezing or in that neighbourhood.

Posted by: markb Aug 6 2011, 09:27 PM

AAR?

Posted by: PancakePorsche Aug 6 2011, 10:53 PM

QUOTE(Eck @ Aug 6 2011, 07:26 PM)

Where does the wire I have circled go? It wasn't attached to anything so I'm trying to figure out why it wasn't attached and where it should go.

Thanks
Kirk

For sure the lead for cold start thermo switch. Mine is located just behind the distributor (1973) bracket on plenum.

Posted by: 914_teener Aug 7 2011, 12:12 AM

QUOTE(PancakePorsche @ Aug 6 2011, 09:53 PM)

QUOTE(Eck @ Aug 6 2011, 07:26 PM)

Where does the wire I have circled go? It wasn't attached to anything so I'm trying to figure out why it wasn't attached and where it should go.

Thanks
Kirk

For sure the lead for cold start thermo switch. Mine is located just behind the distributor (1973) bracket on plenum.

Go to Jeff Bowlsby's site.

He has a wiring diagram for the harness.

I agree. Cold start thermoswitch

Posted by: John Jentz Aug 7 2011, 10:49 AM

That looks like the cyl head temp sender wire. It should have a 1/4" male spade conn and a big rectangular plastic insulator on it.

Posted by: Bartlett 914 Aug 7 2011, 10:58 AM

QUOTE(John Jentz @ Aug 7 2011, 11:49 AM)

That looks like the cyl head temp sender wire. It should have a 1/4" male spade conn and a big rectangular plastic insulator on it.

CHT between the injectors and the MPS connector

Posted by: swl Aug 7 2011, 11:23 AM

I don't think so John/Mark. The CHT should be in the first cluster with #3 injector lead.

Jeff Bowlsby has done a great job documenting the harness

http://bowlsby.net/914/WiringHarnesses/HarnDia_FI_EA-EB.jpg

CHT is "E" and the thermoswitch is "K".

Interesting though that the CHT lead doesn't show in that picture. Maybe behind the harness itself

Posted by: Eck Aug 7 2011, 12:22 PM

I have a plug for the CHT, that is what has me puzzled. Doesn't the CHT take two wires? This is a single. I'll go to Jeff site and check it out.

Thanks
Kirk

Posted by: swl Aug 7 2011, 12:30 PM

single wire. return path is through engine ground. same thing for the thermo switch

Posted by: Eck Aug 7 2011, 12:32 PM

Steve you got it! It is the Thermotime switch.

Thanks everyone.

Kirk