Worst Car Wash Ever
 

First I have a 2000 Chevy S10/Blazer. Recently I drove through a drive through car wash. Apparently the brushes caught hold of my trailer hitch wiring harness, which apparently wrapped around one of the big brushes. It ended up wrapping out the left side of the wiring harness. Does anyone know what this plug is called and where the other end goes. Any help would be greatly appreciated.

That is splice pack 423 (SP423 or S423). It sits on top of the rear cross member roughly in the middle. It looks like it might be missing, but there's supposed to be a little harness mount projection that fits into a 1/4" hole on the cross member.

The splice pack contains ~11 grounds (depending on the type of Blazer you have), to include (but not limited to) park and turn lamps, wiper motor, fuel level sensor and door jamb switches.

Thanks very much. No the hunt is on. I also have to find out where all those grounds go as the whole left side wiring harness was pulled out.

Made a mistake...stated that was S423...it is S427 (see attached diagram for help). Note, this is for a Blazer with a lift gate. There is more to it, but this is the meat. Also note "U" & "V" indicated on the diagram are for your seats (power, heated, etc). "S" & "T" are for the left and right tail lamps, respectively.

Yep that looks right, tail gate no longer works. Thanks for the help, off the the salvage yard tomorrow, followed by some work.