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Electrical / Re: Brake Lights turn off if I have my lights on

« Last post by bd on January 08, 2026, 10:47:37 pm »

Do yourself a BIG favor! Disassemble the ground connection you just serviced and liberally coat the terminal and sheet metal with some antioxidant paste available in the electrical department of most hardware stores. Reassemble, ensuring the screw is tight. This will help eliminate a recurrence.

Electrical / Re: Brake Lights turn off if I have my lights on

« Last post by juancano on January 08, 2026, 07:24:10 pm »

Sonnnofa..... it was the ground.

The ground is screwed to the body (sheet metal) with a metal ring and a bolt. I undid it and noticed it was kinda rusty. I sanded the terminal and the part on the body clean, and now it works.

IDK why I don't check for that kind of stuff first. It seems it's a bad ground 90% of the time!!

Thank you all for your help!

Electrical / Re: Brake Lights turn off if I have my lights on

« Last post by bd on January 08, 2026, 03:42:47 pm »

Try using a temporary jumper wire between the socket shell and a shiny bare metal spot on the frame (not the bed, since the bed may not be properly grounded due to corrosion or a broken ground lead).

Electrical / Re: Brake Lights turn off if I have my lights on

« Last post by juancano on January 08, 2026, 01:28:22 pm »

I will quadruple check that. Thank you.

Electrical / Re: Brake Lights turn off if I have my lights on

« Last post by bd on January 08, 2026, 12:52:39 pm »

The bulb socket isn't properly grounded to frame.

Electrical / Brake Lights turn off if I have my lights on

« Last post by juancano on January 08, 2026, 12:43:37 pm »

1986 C10 2WD

I've had a similar issue before but this is new.

Right side tail light: Brake light works when pedal is pressed; if I turn the lights on, the light on the tail light turns on (same bulb, 2 filaments). But, if the lights are on and I press on the brake, the bulb just turns off. So no light and no brake light.

- Replaced Bulb, tried 3 different bulbs
- Replaced socket (previous one was also a newish one)

What could it be? The brake pedal switch? Ideas?

4 Wheel Drives / Crossmember spacers?

« Last post by c.whites1911 on January 08, 2026, 03:56:26 am »

1978 K10 stock height 305 w/ th350 with np203 LWB Hey yall, long time reader second time poster, took down my transfer case to replace my transmission pump and cant remember how the crossmember spacers go on, do they go above, below, in between? Also, when my pump went out , i grabbed another one from a parts transmission i have, will that work? It moves again indernits own power but shuddered a bit at first, itll go up through the gears ok but seems like its kinda stiff getting up there and has a vibration the whole time, pretty sure my rear seal on engine started leaking too, i changed all the seals on the tranny when i attempted to fix, the pump gasket seal, front seal, anybhelp would he appreciated thanks

Members Rides / Re: 84 Jimmy Build

« Last post by 1981lt1 on January 06, 2026, 06:54:08 pm »

Trying to get time devoted to the truck during the holidays has been tricky. I've only been able to devote a total of a few hours over the past couple of weeks but every little bit helps. I've got the next 3 days off so I will be focusing on block sanding and getting the 2nd round of primer sprayed.

Driver Side...