Hey all, I’ve been tracking down a seat issue.
When I jump power from the battery to the underseat connector, seat adjustment works so I think my grounds and switches are fine
When I switch the window and seat circuit breaker the windows still work but the seats don’t, so I don’t think the circuit breaker is the issue either.
the only thing is when I try to jump power from the body relay box to the underseat connector, I get nothing.
Could anyone tell me which wire feeds power out to the seats?

I thought it was the thick orange (second from the top on the right) but maybe I’m wrong?
On a separate note, my heated seats also just stopped working recently but the fuse is fine, wondering if there’s anything I should look for while I’m down here

 

What year blazer do you have? Some of us might have the schematics you need.

 

had a non-working seat in 99 blazer,,might have been a jimmy...it was a rust bucket leaker,,problem was water infiltration. ,Under carpet, totally green ball of corrosion behind seat where wires meet each other

 

It’s a 2000 Blazer with the 8 way switch (memory)
I pulled the carpet up and found a nice bunch of water sitting along the plastic channel.
Ran two new wires from a clean point and now they work like a dream
Heated seats still don’t work, but they were working while the seats weren’t up until a week ago