Yet another "where does this wire go?" thread

[SiberianDVM]

1977 911 Targa.

Today I replaced the turn signal/hi-low beam switch due to a sticky hi-low condition that had my high beams come on erratically. I tried to be conscientious on exact wire connections, and the hi-low beams work fine now, but I now have no turn signals.

Obviously, user error, but what? All fuses are OK. But I did find a dangling wire that I may have dislodged while trying to pull out the old switch wiring.

It is a green/black/white wire with a female connector that comes off the Hazard switch. The hazard flashers still work fine. The only place I can think it may connect it to the ignition switch.

Any help greatly appreciated. (I hate the wiring in these old 911s).

[proporsche]

you did not have to replace the combo switch.There is way to repair it if your high beams would come up while driving.Let`s see the wires on the picture .I think you are missing the opposite of this wire with connector..possible white,right?
Ivan

[SiberianDVM]

Originally Posted by proporsche

you did not have to replace the combo switch.There is way to repair it if your high beams would come up while driving.Let`s see the wires on the picture .I think you are missing the opposite of this wire with connector..possible white,right?
Ivan

I tried the repair and couldn't get it to work.

Maybe this goes to the turn signal relay? I think I can reach it through the gauges, so I will try that tomorrow.

Thanks.

[PapaJim]

I am watching this thread with interest. 3 years ago I replaced my whole switch and it worked great until this fall. Now it will often jump to high beam by itself. Big nuisance.
Do I need to replace the whole switch again. Aaarghhhh !
- 78 911 SC

[proporsche]

on this picture you can see your white plug going into the black wire right where the yellow wire is bend on the left

[Dpmulvan]

Originally Posted by SiberianDVM

1977 911 Targa.

Today I replaced the turn signal/hi-low beam switch due to a sticky hi-low condition that had my high beams come on erratically. I tried to be conscientious on exact wire connections, and the hi-low beams work fine now, but I now have no turn signals.

Obviously, user error, but what? All fuses are OK. But I did find a dangling wire that I may have dislodged while trying to pull out the old switch wiring.

It is a green/black/white wire with a female connector that comes off the Hazard switch. The hazard flashers still work fine. The only place I can think it may connect it to the ignition switch.

Any help greatly appreciated. (I hate the wiring in these old 911s).

That wire goes to your turn signal switch.

[Dpmulvan]

[SiberianDVM]

Originally Posted by Dpmulvan

That wire goes to your turn signal switch.

You are correct, thank you! I had the brown wire from the hazard switch plugged into that wire on the turn signal switch. Once I plugged the green/black/white wire into the green/black/white wire on the turn signal switch, the turn signals started working properly, and all the other lights, too, I think.

Only problem now (you guessed it!).....where is this brown (ground?) wire coming off the hazard switch supposed to go? It appears to have an inline resistor.

[E Sully]

Here is an old picture of my headlight switch.
It is the brown wire from the emergency flasher going to the Bk/Rd.



96 is a resistor.

[AlKidd]

Its been posted many times elsewhere and I just had to change mine because most of the hi/low switch was melted. Add relays to your headlight wires and you should never have to change the hi/low signal switch again. Buy the kit or make your own for $10. Sending 10-15 amps through those skinny little metal arms in the switch is just asking for trouble.

[SiberianDVM]

Originally Posted by E Sully

Here is an old picture of my headlight switch.
It is the brown wire from the emergency flasher going to the Bk/Rd.



96 is a resistor.

That looks like it. I may be missing the Blk/Red wire. Looks like it connects to 58 on the headlight switch, which is the dash light circuit that needs to be fused? I did that when I replaced the headlight circuit a couple of years ago. Hopefully, the worst that will happen when I plug it up is that I'll blow a fuse.

[SiberianDVM]

Originally Posted by AlKidd

Its been posted many times elsewhere and I just had to change mine because most of the hi/low switch was melted. Add relays to your headlight wires and you should never have to change the hi/low signal switch again. Buy the kit or make your own for $10. Sending 10-15 amps through those skinny little metal arms in the switch is just asking for trouble.

Yes, I added the headlight relays after I got the car, but the years had already taken their toll on the switch. Thanks.

[E Sully]

My photo was of my 1973.5.
Here are diagrams of 1977.
You can see the connection from E1 headlight switch 58a to Hazard 58, with resistor N6.

[SiberianDVM]

Success! I found the Blk/Red wire; some PO had used it to power the light dimming circuit to a newer Blaupunkt radio. I disconnected it from that, plugged it into the brown wire, and ran a splice to the radio circuit. I can't see that it made any difference (I thought it might light up the hazard switch when the lights are on, but it didn't). Everything seems to work OK, for now.

Thanks everyone.

P.S. That headlight switch is a pain to get in and out.