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Post by sparkyj on Aug 11, 2024 13:38:52 GMT -5
Greetings. i have replaced my turn signals with incandescent units. The front with a diamond shaped (Sporster?) type of unknown wattage and the rears with some bullet type 10w lights. I hear you have to keep an overall wattage of 54w going to get the blinkers to work. I did not know this at the time. Well, yes the blinkers don't blink. My freind has done a similar swap with 10w bulbs and his do work. So I'm looking for ideas. I will determine the wattage in the front light fixtures and then look for loose ground issues. The stock lights were working prior, but I had taken the whole front end appart and maybe there is a loose wire in the headlight can.
Im just curious to know if any of you have had any success running lower wattage bulbs and what the limitastions are. it would be nice to run original wattage but the bulbs are too big.
Thanks.
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Post by sparkyj on Aug 12, 2024 9:57:43 GMT -5
So I did a test. I hooked the original 27w turn signals back up momentarily and got the system to flash. This rules out bad ground, turn signal switch of botched headlight can wiring. AND it verifies that the system is wattage dependent, 54w to be exact! (2 x 27w)
the one thing I didn't do was disconnect the rubber box thing (i think we are calling this the "Self Cancelling Unit"?)...to see if the flashers work without that. .....DUH!
All this said, can the Realay part number FN257C be replaced with a flasher unit that will accept lower wattage? I assume 18-20w.
Does anyone know if an exact pin configuration flasher might work?
Thanks guys!
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Post by stevep on Aug 12, 2024 11:37:00 GMT -5
The only bit I can help with is, that rather than being wattage dependent, it's probably more accurate to say the system is resistance dependent. The bulbs having the correct resistance for the circuit. There ends my understanding when it comes to electrics. Sorry!
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Post by sparkyj on Aug 12, 2024 11:48:20 GMT -5
Interesting. I seem to recall someone introducing some sort of resistors into the circuit just before the relay. Is that possible?
I just measured the resistance of my original and new bulb.
Origina 27wl: .8 ohms
New 10w: 1.8 ohms
Does this mean a 2 ohm resistor would make the blinkers work? On which pin of the relay?
Thanks again for any help
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Post by redgalvin on Aug 13, 2024 0:00:16 GMT -5
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Post by sparkyj on Aug 14, 2024 20:47:26 GMT -5
Thanks guys. i ordered the Flasher!
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Post by sparkyj on Aug 19, 2024 20:33:32 GMT -5
redgalvin, i got the flasher in the mail. It is 2 pin. Do you recall which pin goes on the brown wire? this flasher can go on in 2 different ways giving me a 50/50 chance of failure :-0 |
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Post by sparkyj on Aug 19, 2024 21:29:09 GMT -5
Hey I figured it out. Works great.
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