Removing my controller for inspection & repair:
There were 3 mounting screws board to back wall, top right, & 2 bottom & 1 tie wrap on the wire bundle screwed down. After removing the screws, I had to chip away at the foam in & around the wire entry hole to get some working room.
On the board the battery power goes to the 2 lugs, top left is ground w/4 spade lugs & 1 bottom left 12v+ disconnect & tape the 12v+, it's hot.
Unplug the three molex plugs & you have the board out.
The front & back are screwed on at the corners, but the front aluminum plate has 4 pop rivits attaching plate to 2 of the large capacitors. I drilled the pop rivits out & then inspected the board. There was a slight discoloration at one of the relays but until I put external power on the lugs and into the "park in" the relay was silent. I tested the other, which was left turn & it clicked & I had voltage out on the bottom left 3 pin molex output to Solera lights.
After removing the old & soldering in the new relay, I tested again with power on the lugs & 12v+ to the top molex "Park In" The relay clicked & I got 12v+ out on the running lights out pin bottom left.
You need the wiring diagram that is on this thread to identify the pins and wire colors.
See my post from earlier today, American Technology Components will repair it for you or they sell a replacement board. Nice & helpful to me, you can contact them at www.atccomp.com
Hope this helps. Peter