They have individual circuits with a relay each. The headlight switch effectively switches two circuits on and off at the same time. So in effect when on the car they also only work one at a time but both on their respective circuit.
<b>FOR SALE!!!!Purple 2.0 Litre DHC Grinnall</b>
Red 4.0 Litre V8 DHC Grinnall (with huuuuuge arches...!)
