Ronnie the brake sw is just an non polarized on/off switch so the 2 female plugs can go on either side of it though I like to keep it oe just as a good practice. See if there's fire at the white wire downstream at the col harness w pedal depressed then see if the 2 brake wires have fire coming out of the col harness (circuit tester w long thin needle tip works good to access the wires inside the pull apart connector while each half is still connectted) to see if there's fire