yeah the Square D doesnt need an external relay. i belive there is a diagram at www.bagginit.com
wht01ranger
+1y
if you are running any type of unit that runs at a high amperage, you need a relay. I.E. multiple compressors or a single high current draw compressor.
and that square D switch can handle a good amount of amperage. if you want to run no relay, just make sure the switch you get is rated for the amperage you're putting through it.
AVTekk
+1y
all square d's come with directions, its a little folder up piece of paper inside the housing, and i think the sticker inside the cap has it too..either way, that switch has two curcuits, and you only use one for each comp. theres a plastic divider in the middle of the four terminals, you only use two terminals on each side, you dont jump across it. then just hook it up like any other p/s.
1twztdwagon
+1y
http://www.airridetalk.com/images/stories/wiring/1_1_1.gif in this picture only one side is hooked up i have 2 compr. do i only need to hook them up to one side ? what if i fused the switch an just ran it straight to the batt instead of jus running it to the ign wire..