# 1985 chevy c10 power window wiring question **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** chevrolet\ **Created:** [December 21, 2020, 5:32am UTC](https://community.cartalk.com/t/1985-chevy-c10-power-window-wiring-question/173504 "2020-12-21T05:32:34Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Garrett-17](https://avatars.discourse-cdn.com/v4/letter/g/ba9def/32.png) [@Garrett-17](https://community.cartalk.com/u/Garrett-17)\ **Post date:** [December 21, 2020, 5:32am UTC](https://community.cartalk.com/t/1985-chevy-c10-power-window-wiring-question/173504/1 "2020-12-21T05:32:34Z")
Hello, I am working on the wiring for the power windows of my truck and there is a connector (image attached below) that I have no idea what for. It is right next another connector that powers the motor of the window. There is also a metal box thing that the other side of the connector is attached to. Any help at all is appreciated thanks! ![PXL\_20201221\_040820818|375x500](upload://nauqTT105PY2mooT4vah2MamwFW.jpeg ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [December 21, 2020, 1:59pm UTC](https://community.cartalk.com/t/1985-chevy-c10-power-window-wiring-question/173504/2 "2020-12-21T13:59:06Z")
Your picture didn’t upload. ---
**Author:** ![shanonia](https://avatars.discourse-cdn.com/v4/letter/s/9de053/32.png) [@shanonia](https://community.cartalk.com/u/shanonia)\ **Post date:** [December 21, 2020, 4:22pm UTC](https://community.cartalk.com/t/1985-chevy-c10-power-window-wiring-question/173504/3 "2020-12-21T16:22:24Z")
It might be there for something your vehicle doesn’t have, like a power mirror. ---
**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\ **Post date:** [December 22, 2020, 11:26pm UTC](https://community.cartalk.com/t/1985-chevy-c10-power-window-wiring-question/173504/4 "2020-12-22T23:26:48Z")
Check to see if the grounding is okay for that area. You may want to try using a temporary ground jumper to prove the normal ground is okay or not. ---
**Author:** ![Garrett-17](https://avatars.discourse-cdn.com/v4/letter/g/ba9def/32.png) [@Garrett-17](https://community.cartalk.com/u/Garrett-17)\ **Post date:** [December 23, 2020, 5:42am UTC](https://community.cartalk.com/t/1985-chevy-c10-power-window-wiring-question/173504/5 "2020-12-23T05:42:40Z")
Here is the image. It seems as if it’s some sort of relay. I’m just not sure where it’s supposed to plug into ![PXL_20201221_040812879](https://global.discourse-cdn.com/cartalk/original/3X/5/e/5e54cd0478591a35a2ab7a07e76f7fc29f666dc8.jpeg) ---
**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\ **Post date:** [December 23, 2020, 3:44pm UTC](https://community.cartalk.com/t/1985-chevy-c10-power-window-wiring-question/173504/6 "2020-12-23T15:44:19Z")
I assume that the item shown in the picture is part of the circuit for the power windows and if so it may be a circuit breaker possibly or relay for the motors. It doesn’t need to be plugged into anything. There are plugs going to it shown in the picture. It needs to be mounted to something. The orange wire looks like it may be slightly damaged. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [December 23, 2020, 5:19pm UTC](https://community.cartalk.com/t/1985-chevy-c10-power-window-wiring-question/173504/7 "2020-12-23T17:19:51Z")
That is the power door lock relay, it needs to be bolted down for a proper ground. ---
**Author:** ![Ramirezsl237\_194138](https://avatars.discourse-cdn.com/v4/letter/r/f475e1/32.png) [@Ramirezsl237\_194138](https://community.cartalk.com/u/Ramirezsl237_194138)\ **Post date:** [July 16, 2025, 8:22pm UTC](https://community.cartalk.com/t/1985-chevy-c10-power-window-wiring-question/173504/8 "2025-07-16T20:22:26Z")
I have the same thing in my truck it’s an 1982 c10 I’m working on my windows they have no power but my door locks do.. all of the wiring ends up at this relay. Does that power both windows and door lock.. and did you ever fix you issue ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [July 16, 2025, 8:43pm UTC](https://community.cartalk.com/t/1985-chevy-c10-power-window-wiring-question/173504/9 "2025-07-16T20:43:30Z")
Power for the window switch is supplied from a 30 amp circuit breaker in the fuse block. There should be 12 volts on the pink wire from the fuse block to the window switches.