Replaced corroded light housings, where bulb connections to housing felt "scratchy" when plugging in--suspect corrosion. I was hoping that the new housings would simply plug in (wired connections would disconnect easily). However, I found that the originals were soldered and heat-shrunk in. I had to trace and cut the original connection, butt-connect in (can't solder in the air, above my head...), heat-shrink and then tape my connections.
However, the lights are working much better now. :) Appreciate the halogen bulbs that came with, but used LED replacement bulbs, too.