Wire ID help

[andrewwoz]

Car - 69 super bee 4 speed

So I have a loose black wire near the bulkhead connector (engine side) and I'm not sure where it goes. It is is coming out of a connector that goes to the reverse switch on the trans. The reverse light inside and reverse lights worked fine, does it connect to the starter relay somehow so the car won't start in reverse? Because I was able to do that in the past. I was thinking it is also possible its not the original harness for the car and could be for an auto...

Here are some pics and a very basic wiring digram I drew up.

 

[Davefinan]

Not sure where it goes but it definitely has the bulkhead type terminal on it , so it likely plugs into one of the vacant spots would be my guess.

 

[RemCharger]

Possibly unrelated , but where does the ground wire coming off the bottom of the start relay go to?

 

[pnora]

Possibly unrelated , but where does the ground wire coming off the bottom of the start relay go to?

Right looks like an automatic relay.

 

[pnora]

Car - 69 super bee 4 speed

So I have a loose black wire near the bulkhead connector (engine side) and I'm not sure where it goes. It is is coming out of a connector that goes to the reverse switch on the trans. The reverse light inside and reverse lights worked fine, does it connect to the starter relay somehow so the car won't start in reverse? Because I was able to do that in the past. I was thinking it is also possible its not the original harness for the car and could be for an auto...

Here are some pics and a very basic wiring digram I drew up.

View attachment 1808159

View attachment 1808160

View attachment 1808161


View attachment 1808158

The loose black will plug back into the bulkhead. I cant remember what cavity? Z maybe and its for the dash mounted reverse light.

 

[RemCharger]

The loose black will plug back into the bulkhead. I cant remember what cavity? Z maybe and its for the dash mounted reverse light.

That's what I was thinking but he said the dash indicator works

 

[pnora]

That's what I was thinking but he said the dash indicator works

Then someone must have it wired incorrectly. The jumper with two male spades, goes into terminal C and Terminal Z. I suspect this could of been an automatic car.

 

[pnora]

Here is the wiring.

 

[andrewwoz]

Not sure where it goes but it definitely has the bulkhead type terminal on it , so it likely plugs into one of the vacant spots would be my guess.

Those 2 vacant spots in the top bulkhead connector are empty on the firewall side

Possibly unrelated , but where does the ground wire coming off the bottom of the start relay go to?

Right looks like an automatic relay.

That little black wire just goes to ground, after researching this I agree it's an auto relay, seems like the 4 speed ones are not as easy to come by and the grounding jumper is a common move.

Then someone must have it wired incorrectly. The jumper with two male spades, goes into terminal C and Terminal Z. I suspect this could of been an automatic car.

The car is a factory 4 speed car per the fender tag but it seems likely that the harness is for something else. Looking at backup harness photos on year one the auto harness neutral/reverse switch is a 3 pin switch, mine is only 2 pin for reverse. They list 2 harnesses for 69s early and late, mine has the same connector as the late one but then it has an extra factory style connector as well.

 

[andrewwoz]

Here is the wiring.

View attachment 1808216

Thanks for posting that. So it looks like the backup harness connects to C,D and Z which is what I have, plus the mystery 4th.

 

[pnora]

Thanks for posting that. So it looks like the backup harness connects to C,D and Z which is what I have, plus the mystery 4th.

Looks like you have a mix. The jumper goes to C and Z. Your mystery bare spade needs to go to Z. That is what feeds the dash mounted reverse lamp. If it is working someone ran a jumper to the back up wire inside the car. Look under the dash. The wire from that dash reverse light should go direct to it. Thats why there is a jumper. When the switch on the tranny closes it sends power to the jumper, Z feeds the dash lamp and C feeds the rear back up lamps. If I feel better I will try to take a picture of my wiring.

 

[dadsbee]

I'm here all week... when I'm not in the plow truck, so you got 10 minutes of my available time!! LOL

 

[pnora]

I'm here all week... when I'm not in the plow truck, so you got 10 minutes of my available time!! LOL

View attachment 1808223View attachment 1808226View attachment 1808227View attachment 1808229

Nice.

 

[dadsbee]

And like Pnora said, you have too many connectors going on there!!

 

[andrewwoz]

Looks like you have a mix. The jumper goes to C and Z. Your mystery bare spade needs to go to Z. That is what feeds the dash mounted reverse lamp. If it is working someone ran a jumper to the back up wire inside the car. Look under the dash. The wire from that dash reverse light should go direct to it. Thats why there is a jumper. When the switch on the tranny closes it sends power to the jumper, Z feeds the dash lamp and C feeds the rear back up lamps. If I feel better I will try to take a picture of my wiring.

If you follow my wiring diagram C and Z are connected through the extra connector I have, that connector is a 1 pin but it has 2 wires tying into each side. It must be from a different model/year. To make it correct it looks like I just need to remove the black wires from the reverse switch harness side on both connectors, put the wire(s) from the single pin connector into the 2 pin connector (next to the purple) and then run the jumper directly to z.

I'm here all week... when I'm not in the plow truck, so you got 10 minutes of my available time!! LOL

View attachment 1808223View attachment 1808226View attachment 1808227View attachment 1808229

this helped a lot, thank you!

1 off topic question for you (hopefully I have some minutes left!)

It looks like your reverse switch harness runs over to the passenger side, does it then go the top of the trans to reach the plug? I have mine on the driver side running alongside the speedo cable.

 

[dadsbee]

Factory wiring, the harness goes from the trans switch.. up and along the top of the transmission and bell housing coming out near the oil pressure sender..

 

[pnora]

If you follow my wiring diagram C and Z are connected through the extra connector I have, that connector is a 1 pin but it has 2 wires tying into each side. It must be from a different model/year. To make it correct it looks like I just need to remove the black wires from the reverse switch harness side on both connectors, put the wire(s) from the single pin connector into the 2 pin connector (next to the purple) and then run the jumper directly to z.




this helped a lot, thank you!

1 off topic question for you (hopefully I have some minutes left!)

It looks like your reverse switch harness runs over to the passenger side, does it then go the top of the trans to reach the plug? I have mine on the driver side running alongside the speedo cable.

The wiring drops straight down about center firewall to a bell housing wire bracket and then to the transmission