Quote:
Originally Posted by GM man
It appears that some people had to use the relays and some didn't. Are the relays just if you're running LED brake lights?
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The relays are for when you're using an aftermarket switch. If you're using a factory switch they are normally open switches, but aftermarket switches are normally closed, so the relays are used to reverse the switches. You will need them to use the switch you have, just wire it like the way it shows in the link I provided.