i know this is in the wrong forum, but im not getting any responses on the first gen board. i was having a voltage draw problem on my 1972 k-5, but i beleive we narrowed it down to a relay under the dash. i just dont know what it is a relay for.it is on the upper right hand side of the fuse block.it has a metal case and a 3 wire plug to it. if anyone can tell me what this is for i would appreciate it. truck seems to run fine without it plugged in, but i still want to replace it, but what is it. thanks for your replies.