Okay guys, i've got electrical problems with my turn signal. The bike is a 78 Yamaha SR500, I've put on after market signals that have 23 watt lamps. The stock lamps are 27 watts and the signal indicator in the Tach is 3.4 watts. I've eliminated the 3.4watt lamp from the curcuit by dumping the tacho. The stock flasher relay is a Nippondenso FN257C rated at 27w x 2 +3.4w this stock system pulls 4.78 amps and 2.50 ohms. The new setup pulls 3.83 amps and 3.13 ohms. the differnce between stock and replacment is .95 amps and .63 ohms. Having said all that I think (?) I have to put a resistor into the new curcuit to balance the load on the flasher. Any thoughts on this?? Am I right in thinking this??
I've tried several different flashers, EL12, EP35, 552 (two terminal, 2 to 6 Bulbs), and a 575 (two terminal, 1-8 bulbs) and the stock ND FN257C (3 terminal, 27w x 2+ 3.4w). With all these flashers, except the ND, I can unplug one of the turn signal lamps and the two left lamps will flash normally and the right single lamp will flash, but with all four lamps plugged in they flash all at once like car hazard lights. It doesn't matter if the switch is positioned for the left or right, they all flash. Something is strange and I'm thinking the load on the curcuit is different between the 23w x 2(total 46w) lamps and the 27w x 2(total of 54w) lamps. SOOOOOOO, a resistor would be in order, I'm thinking, maybe????? If so what size resistor? And on what curcuit do I insert this resistor? The line coming from the on/off switch to the flasher or the line coming from the turn signal switch? I've never done this kind of job so confusion reigns and any help would be much much appreciated, the guys over at the SR500 Forum have been silent, despite my repeated pleas for help. I'm hopefull someone here can help clear this up before I go beserk and rip the signals off the bike and screw the cops. Please ask me any questions if this explanation seems unclear and I will try to shed some light.
Terry
J'ville, Fl
I've tried several different flashers, EL12, EP35, 552 (two terminal, 2 to 6 Bulbs), and a 575 (two terminal, 1-8 bulbs) and the stock ND FN257C (3 terminal, 27w x 2+ 3.4w). With all these flashers, except the ND, I can unplug one of the turn signal lamps and the two left lamps will flash normally and the right single lamp will flash, but with all four lamps plugged in they flash all at once like car hazard lights. It doesn't matter if the switch is positioned for the left or right, they all flash. Something is strange and I'm thinking the load on the curcuit is different between the 23w x 2(total 46w) lamps and the 27w x 2(total of 54w) lamps. SOOOOOOO, a resistor would be in order, I'm thinking, maybe????? If so what size resistor? And on what curcuit do I insert this resistor? The line coming from the on/off switch to the flasher or the line coming from the turn signal switch? I've never done this kind of job so confusion reigns and any help would be much much appreciated, the guys over at the SR500 Forum have been silent, despite my repeated pleas for help. I'm hopefull someone here can help clear this up before I go beserk and rip the signals off the bike and screw the cops. Please ask me any questions if this explanation seems unclear and I will try to shed some light.
Terry
J'ville, Fl
