Double negative wire. Where does it go?

[JamesHenry]

Hey Guys, I have a 91 K5 I'm putting back together. I can't figure out where this wire plugs in. It's about 5ft long coming out from behind the fuse box. Both wires on the plug are black and white. One is flipped around from the other. There's no power to either wire so I'm at a loss. I attached photos. Any help is appreciated. Thanks!

 

[K85 Octane]

POSITIVE

Sorry, had to before someone else.

 

[JamesHenry]

POSITIVE

Sorry, had to before someone else.

That's what I thought it should be but have no power on it.

 

[Capt Ron]

Not 100% sure but I think it goes to your transfer case shifter.

 

[JamesHenry]

Not 100% sure but I think it goes to your transfer case shifter.

Thanks Ron. I will check that out.

 

[90GMCJim]

Looks like the one for the seatbelt. Driver side only

 

[JamesHenry]

Looks like the one for the seatbelt. Driver side only

That would make sense. I will check it out this weekend and update everyone. Thanks

 

[kennyw]

Wiring diagrams can be found here: https://ck5.com/forums/threads/1991-gm-technical-manuals.348585/

One black with white stripe and one black wires go to the safety belt retractor switch as @90GMCJim stated.



The 4x4 indicator switch has either one black/one white wire or one brown/one white wire depending on if you have rear wheel anti-lock brakes.

 

[JamesHenry]

Wiring diagrams can be found here: https://ck5.com/forums/threads/1991-gm-technical-manuals.348585/

One black with white stripe and one black wires go to the safety belt retractor switch as @90GMCJim stated.

View attachment 516249

The 4x4 indicator switch has either one black/one white wire or one brown/one white wire depending on if you have rear wheel anti-lock brakes.
View attachment 516250
View attachment 516251

I finally had a chance to look at it and it does go to the safety belt. Thanks for all the replies. You guys rock!