Can you identify this please? Warner electric?

[Osteoblast]

Hello!
I recently got another "new" Tahoe.
'99 2dr 4wd
What's the thing shown in the pictures?
What does it do?

Thank you.

 

[mattillac]

Here are a few pics of what you might have there, best as I can tell.

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Guess that thing is plumbed to the hydraulic brake line, like it converts the vehicles hydraulic brake pressure into electric for trailer brakes.

Must be a tee somewhere on your trucks brake line.

Looks like the dial / knob thingy is probably for adjusting the trailers brakes / sensitivity.

Interesting for sure.

 

[PlayingWithTBI]

^^^Yep

 

[thegawd]

WOW! now that is interesting!

 

[89obsSB]

That or it’s a ghetto bass controller knob from where someone may have had subs in the back.

 

[89obsSB]

But looks for sure like a trailer brake controller.

 

[PlayingWithTBI]

It's a brake controller. We had Kelsey/Hays controllers which we Teed into the rear brake line of the pickup to it. Ours were a little different for adjusting brake bias, **** a little thumb wheel on it and a slide lever for adding more trailer brake such as in wet or snowing roads when you didn't want the trailer to pass you up, ha ha.