please help me idenitify these wires
 

cleaning up my engine bay for my ls swap and i cant figure out what these 2 sets of wires are. the first one comes out of the firewall on the passenger side right by the ac wiring, the second one comes out on the drivers side right by the main bulkhead fitting..i dont think either of them were plugged in on my 305.

http://i166.photobucket.com/albums/u...psgpnawu2w.jpg
http://i166.photobucket.com/albums/u...psvwrsreuu.jpg
http://i166.photobucket.com/albums/u...pspxqiyahz.jpg

Re: please help me idenitify these wires
 

I can't figure out the year of your truck but the vacuum switch on the firewall was probably for the lock up torque converter clutch in the transmission.

The flat 4 pin terminal, I would guess, is for the spark control HEI. Is this a '84? '85?

Re: please help me idenitify these wires
 

I figured it out. You have it right. It's a 84 k5 blazer. Sorry I didn't specify it's in my signature