My spot light above the cab isn't working and I am guessing the sealed beam is bad. I will check it first to make sure there is continuity. It is a GE and the only marking I see is M79. It is about 5.5 inches and has a 2 wire connector on the back. It is held by rusty clips that I will have to figure out how to replace.
I can't seem to find a 5.5. I found plenty of 4.5 (airplane 28V) but no 5.5

Any vendors that specialize in these? Also, I noticed there is a fan above the driver that has a loose wire not going anywhere. Were these part of the set up or did someone just add it?

Thanks in advance....Having a blast with this truck. Drove it 90 miles today without a hiccup. Sweet spot is about 43mph.