...have relays for low and high beams on each side - 4 total - have you checked this? DID YOU GET THE RIGHT BULB THEY MAKE SINGLE AND DUEL ELEMENT BULBS DUEL ELEMENT BULBS ARE HIGH AND LOW BEAM ...
Question about Cars & Trucks
...uses 21watts duel element turn/park or PHILIPS 7443 Specifications, more common # yes there are makers of this bulb that work and suck 25watts even with LED inside, + the resistor inside. costy
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