philw
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| posted on 23/7/09 at 10:43 AM |
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Indicators
The rear indicator bulbs on my car are normal 21w however the fronts are 5w so they flash too quickly, what size resistors do i need and do i wire it
inline on the + side of the bulb?
Must try harder
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Guinness
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| posted on 23/7/09 at 10:51 AM |
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Can you get 23w bulbs for your indicators?
I bought a load from Premier Wiring, 23w orange:-
Link to their ebay shop
I've got a spare pair if you want to try them?
Mike
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MautoK
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| posted on 23/7/09 at 12:22 PM |
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quote:
Originally posted by Guinness
Can you get 23w bulbs for your indicators?
I bought a load from Premier Wiring, 23w orange:-
Link to their ebay shop
I've got a spare pair if you want to try them?
Mike
A 21W bulb draws 1.75A; 5W draws about 1/2 A. So you need an extra 1.25A which a 10 ohm resistor would draw.
Fix it in parallel with the bulb. It needs to be 20W rated for safety although 10W would probably be OK when you consider the duty cycle; also depends
how it's mounted to dissipate the heat.
...or just fit 21W bulbs 
HTH
John.
He's whittling on a piece of wood. I got a feeling that when he stops whittling, something's gonna happen. (OUATITW/Cheyenne)
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David Jenkins
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| posted on 23/7/09 at 12:39 PM |
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Or, if you've got bike indicators that won't take the standard car 21W bulbs, go to a bike shop and get 23W bulbs that do (usually) fit.
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