Mine are a pair of dual h3 bulb lights with 100 W bulbs throughout. The swutch is a DPDT switch and the indicator is a square amber/red indicator light from an Old Thomas School Bus. The switchplate was made from a smoked piece of 3/16 plexiglass that i heated and bent at 90 deg. i then cit the square hole to accomodate the Thomas indicator. In the down position the 2 outboard lamps light, and in the up position all 4 lamps light. The system is ground switched through 2 5 pin relays and 20 amp fuses.

EDinNB