herringchoker
Platinum Member
Or you could use a 4" rubber tractor utility lamp housing...just replace the clear seal beam with the 4" red stop/tail seal beam. I used these for years for tail lights on dump trucks & highway tractors. They take quite a bump and just bounce back. Like this:
Grote Industries: Product #64931 - w/ 12 Volt, Sealed Beam
Grote Industries: Product #64931 - w/ 12 Volt, Sealed Beam