i think u mean 'RELAY'.. 85 (is switch '+' teminal),86( is switch '-' or ground), 87(is your consumer's '+' teminal.... cosumer like horn or blub)...and 30(is the direct battery supply.. u might wanna put a fuse for this line).... hope info like this can help... if u need to learn more go to howstuffworks.com and find out... :)
I bought door trim wira 1.6 complete wit all 4 switch.
the driver side can control all 4 window..
mine is wira 1.3's which only can control the front window only and the switch is right in midle...