I was thinking of the bulbs like you find in a dash light, but you may very well be correct in the sense that the Whelen 80 used a small halogen bulb instead of the PAR 36. Anyone know of a lightbar olser than that to use the small halogen bulbs?
Still curious as to what was the first lightbar to use the bayonet style bulb like used in dashlights.
The Gear driven Aero's came out in 77, though I have seen some with motors dated 76 so I am 80/20 on that. The non halogen used 1195 bayonet style bulbs, as these were found in other Federal lights like the Fireball. Halogen models used the H1 bulb.