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Thread: Question for the driving light experts

  1. #1
    Senior Member Chris Pomares's Avatar
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    Question for the driving light experts

    We have these driving lights hooked up to relays. They fry a 20 amp fuse. So far they seem to work with a 25 amp fuse. What level of fuse do these lights need?
    If the car looks a little funny it's because the fenders and bumper are just loosely attached.
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    1959 Auratium Green 356A Super w/ Rudge wheels
    1970 Irish Green 914-6 w/2.2S
    Current -1967 Bahama Yellow 912 POLO 2cam4 #1
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  2. #2
    Member TurkisTii's Avatar
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    What's the output of the driving lights? Assume 150 Watts each for 300 Watts total power consumption... 300W@12v is drawing 25 Amps.
    Early 911S Registry #3811
    '70 911S Coupe Tangerine

  3. #3
    Senior Member ejboyd5's Avatar
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    What gauge wire are you using to supply power to those lights?

  4. #4
    Senior Member Chris Pomares's Avatar
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    14G
    The lights are 100W.
    1959 Auratium Green 356A Super w/ Rudge wheels
    1970 Irish Green 914-6 w/2.2S
    Current -1967 Bahama Yellow 912 POLO 2cam4 #1
    www.reSeeWorks.com
    Personalized Vintage Porsche's and parts
    I couldn't find the sports car of my dreams, so I built it myself-Ferdinand Porsche

  5. #5
    Member TurkisTii's Avatar
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    Chris, that's 200W total so unless you are getting a voltage drop at or below 10V under load you shouldn't be blowing the 20 Amp fuse. 200/12=16.67 Amps

    Have you measured the voltage?
    Early 911S Registry #3811
    '70 911S Coupe Tangerine

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