Einar Posted December 28, 2007 Share Posted December 28, 2007 I’m just about to fit Halogen Headlights (for my Vitesse). It seems to be straight forward, however my question is whether there is a need to fit relay(s) to have the full benefits of this improvement? I honestly don’t have a clue, but I’ve heard that relays make additional lights to a car work properly. Anyone have any input. Link to comment Share on other sites More sharing options...
coxy Posted December 28, 2007 Share Posted December 28, 2007 If the halogens have a higher wattage than the old bulbs, the current through the wiring will be higher. This extra current can fry the existing wiring which wasn;t designed for a higher current.The relays are used to seperate NEW wiring used for the new lamps. The existing switches and wiring is used to switch the relays (and the new lights) on. Link to comment Share on other sites More sharing options...
Einar Posted December 29, 2007 Author Share Posted December 29, 2007 Thanks for explaining the purpose of fitting relays - pretty simple ;D The new halogen headlights were fitted rather easy - "easier than changing the bulbs"! Link to comment Share on other sites More sharing options...
Pete Lewis Posted December 29, 2007 Share Posted December 29, 2007 I always get into trouble with this but we run all 4 on dip (with relays) and she's just passed another MOT This exceeds the light regulations but very illuminating, with relays you get full 13.5 volts at the lamps not reduced by volt drop in the old wires and switches Peter Link to comment Share on other sites More sharing options...
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