Which headlight wires curvy sv650s

I have a faired 01 curvy sv650 and i am replacing the lights amongst other things. I have noticed the stock lights were driven by 2 sets of 3 colour coded wires on the detachable wire loom.

i have interpreted them as follows from here

Yellow
White
Black w/White tracer

My question is why is one set equipped with thicker wires than the other? Does one supply more power? If so I would be interested as i could do with the extra power. It is currently hooked up to the thinner ones because i wired it before i noticed and my light is a bit dull.

I wondered if anyone just knew outright as I have tried to use the multimeter to test the current but I cant seem to get a reading as I don't know how to measure amps with a multimeter.

[yorkie_chris]

yellow and white, one is dip one is main.... black/wh is earth.

I would guess with the lamps being 60/55s the thicker wires would be for main beam. Worth checking you don't have bad contact anywhere.

I would not try measure amps with multimeter for big stuff (headlight works out to be 5 amps approx), it is hard to get a good contact and thus reliable reading.

[phi-dan]

Yellow = Main
White = Dip
Black/White = Earth

Both go through 15A fuse so should be capable of drawing same power/current down each line.

hth

I figured the main and dip had that working with the normal switches, the point i was making is that there is one thin white, thin yellow AND thin black/white and one thick white, thick yellow and thick black/white. That confused me... any ideas?

The thick wires probably supply the power for both lights from the fusebox and the thinner gauge supply the second light from the first ?

So the thick wires supply the power for 2 headlights, the thinner wires just for 1.

Originally Posted by Miss_Undaztood

The thick wires probably supply the power for both lights from the fusebox and the thinner gauge supply the second light from the first ?

So the thick wires supply the power for 2 headlights, the thinner wires just for 1.

Pretty likely actually thinking about it, the rest of the wires just split of like that. Ta! I've been doing it all day i always start overlooking the simple answers.....