vr6stormt 0 Posted January 24, 2010 Report Share Posted January 24, 2010 i want to smooth my front bumper ?ive got mk4 style headlights with indicators in (5w push in bulbs)but when i unplug the bumper indys they flash fast like when a bulbs blown is there a way round this??? IE: with a resistor??? Link to post Share on other sites
rodney 17 Posted January 24, 2010 Report Share Posted January 24, 2010 what were the mk3 ratings? then using the difference in watts use this formulaeResistance = Volts divided by Current and that should be ok for you.Or simply same formula. V=IxR and do for mk4 and mk3 - then the difference in two answers gives you the needed resitance value..Good luck. PS if you know the rating of the mk3 bulb could youu pop it on my other thread... cheers Link to post Share on other sites
vr6stormt 0 Posted January 24, 2010 Author Report Share Posted January 24, 2010 what were the mk3 ratings? then using the difference in watts use this formulaeResistance = Volts divided by Current and that should be ok for you.Or simply same formula. V=IxR and do for mk4 and mk3 - then the difference in two answers gives you the needed resitance value..Good luck. PS if you know the rating of the mk3 bulb could youu pop it on my other thread... cheerssorry mate dont get this at all (duh)??? Link to post Share on other sites
bungy 2 Posted January 24, 2010 Report Share Posted January 24, 2010 If you pm me the values i'll work it out for you buddy. Or alternatively measure the resistance of each bulb with a meter and check the difference. Link to post Share on other sites
J5KE F 0 Posted January 24, 2010 Report Share Posted January 24, 2010 If I had front indicators I'd work it out for u! Lol Link to post Share on other sites
rodney 17 Posted January 24, 2010 Report Share Posted January 24, 2010 Right very quikly as I gotta go.. assuming the mk3 watts is 21W then running at 12v we have 1.75amps. There for the resistance of a standard bulb should be 6.85ohmsIf you have a 5 watt bulb then your need current will be... 0.416amps.So you will need a restiance of 4.992 over all. add the two - gives us approx . 10 ohms... needed.Please feel free to check my maths.. as I rushed thisEdit..note this should be a high rating like a ceramic type as they have to distribute the 16watts of heat... Link to post Share on other sites
vr6stormt 0 Posted January 24, 2010 Author Report Share Posted January 24, 2010 Right very quikly as I gotta go.. assuming the mk3 watts is 21W then running at 12v we have 1.75amps. There for the resistance of a standard bulb should be 6.85ohmsIf you have a 5 watt bulb then your need current will be... 0.416amps.So you will need a restiance of 4.992 over all. the differnece between the 2 gives us approx . 1.5 ohms... needed.Please feel free to check my maths.. as I rushed this do you no the colour of the bands and the order they run on the resistor LOL!!! Link to post Share on other sites
rodney 17 Posted January 24, 2010 Report Share Posted January 24, 2010 Sorry its quick... but here you go...http://www.doctronics.co.uk/resistor.htmscroll down Link to post Share on other sites
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