wiring question

[rsporsche]

i have a pair of wires that come through the firewall next to the brake booster / steering column. one looks like blue / white and the other looks like green / white (yellow). they both have female flag spade connectors and are in a plastic cover together. the tubing is about 30" to 36" long. anybody have a clue where they go? i don't find them on the CS wiring diagram. perhaps they were added as part of the L-jet / motronic wiring by a PO.

 

[e9Leveque]

Can you post a picture? So they come through the firewall but then end without terminating anywhere?

 

[rsporsche]

coming thru the firewall below the clutch master opening

and the flag ends

 

[HB Chris]

Green yellow was choke wires

 

[rsporsche]

i found / removed the green white wires that used to go to the chokes already - they were routed with the starter wires in the wiring harness. these 2 wires run on their own ... so i'm starting to wonder if these go to the cold start valve for injection. which would make sense color wise. i guess i need to get inside the car and find out where they hook up.

 

[Dan Wood]

I can look on our 2800cs tomorrow if that helps.

 

[HB Chris]

Reverse light switch blue/white and green/white

 

[rsporsche]

on the 2800cs / early 3.0cs (USA), the wiring diagram does show a blue / white wire ... but shows a green / black - that turns to violet / black when it goes thru the reverse light plug. it could make sense that it would follow the path of the slave cylinder pipe to get to the tranny ... but i thought that wire went thru the transmission tunnel on the drivers side? if not, which wire is that?

 

[HB Chris]

Not on my 2800CS diagram. It has to go thru firewall.

 

[rsporsche]

okay, i will pull out the blue book tomorrow and take another look. i was looking at the pdf that i made years ago, could be the wrong one. it makes sense since it is right next to the slave cylinder ... both wires are run in a protective tube so it makes sense that it would run in an area where there is heat.

when i get inside the car i will try to figure out what is going thru the tranny tunnel. i thought i sheared off a wire when removing the floor insulation. there is an indention in the tunnel for a wire - no idea what it is ... i just assumed it was the reverse light wire.

 

[Stevehose]

I agree with Chris - reverse wiring goes through firewall - I remember that being the case when I put my engine back in.

 

[boonies]

I agree with Chris - reverse wiring goes through firewall - I remember that being the case when I put my engine back in.

yup, same on my 1972.

 

[HB Chris]

And nothing goes through tranny tunnel, closest wires would have been seatbelt warning wires for the seat.