99 Silverado 4headlight mod

cthorny5 · August 7, 2004

I have a 1999 Silverado and I am wondering how I go about doing the modification to get all four headlights to come on when the highbeams are on..

OUMike · August 7, 2004

Mr. Tail Light.com has everything you need. There are many posts recently about that. Just do a search and you should find endless information. Hope this helps.

cthorny5 · August 9, 2004

Thanks alot that did help. I got all the info I needed

99GMCZ71 · August 9, 2004

Looks like on the 99-02 models all you have to do is ground a lead under the relay center under the hood. Anybody tried this?? link

deltron · August 11, 2004

Yep I did it.. real easy, all you need is one of those tap splices, a piece of 16ga wire and an crimp on o connector. i wish i took pics when i did it, was super easy.

asilverblazer · August 12, 2004

I think I will do it either tonight or this weekend sometime. I'll take pictures. Someone can post them if I they will let me email them to ya cuz I can't post pictures

Kansas Kid · August 24, 2004

Here are some pictures of the 4 headlight mod taken by asilverblazer.

Kansas Kid · August 24, 2004

Pic 2

Kansas Kid · August 24, 2004

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Kansas Kid · August 24, 2004

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Kansas Kid · August 24, 2004

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Kansas Kid · August 24, 2004

Pic 6

Matt99Z71 · August 25, 2004

What about keeping the fog lights on when the brights are on?

asilverblazer · August 25, 2004

I don't think it is as easy. (Grounding a wire) I thought there was a doohickey in the guides section. R and D fog light controller? Not sure someone else will know though.