when russ was visiting we checked on my hitch. it is a humongo hitch set up for pulling something mighty heavy. a 2 1/2" receiver. so i got the insert to take it down to 2". and the hi low drop receiver.
so i thought, hey, i should put the test light on it and just make sure the plug works. good idea cause it didnt.
one of the wires from the plug to the control unit was open and the two relays that turn on and flash the left and right turn signals were bad. they both had bad connections on them and were the old style relays.
so a buddy came over and while he installed a new plug and wiring i re wired the left and right turn signal relays in the panel inside the engine compartment. i replace the connectors on each wire and put new regular relays in that you can actually find in a auto store.
all checked out fine. i also added a charge line to keep my honda crv charged up when we tow it.
at least now i know how the relays are wired and how it is all hooked up.