SOHC.co.uk Forums > CB350/400
Blown fuses
Orcade-Ian:
Hello again,
Brian confirmed the colours earlier for the daytime stuff, one blue, one orange both with white tracers. Can you see those in the bunch? - they should not be connected to anything! I think they are both female which means that if the sleeves are intact, they should be safe left alone. BTW If you put a 35 amp fuse directly across the battery it WILL blow.
As you turn on the ignition, under US circumstances, the daytimes will light - if either (or both) of those is earthed, they will produce a direct short and blow any fuse.
Pictures of the bunch might help and as Bryan says check for trapping. Did you have the loom completely off from the headstock?
Ian
Nurse Julie:
A question for those of you with USA bikes with the daytime light, does the tail light come on and stay on with that set up?
Bryanj:
Yes it should but via a different circuit, not if UK RH switch has been fitted(lights on/off switch)
Oggers:
Bryan - sounds like a plan. Many thanks. Pardon my ignorance, but if I follow your plan, how would I detect a short on the meter? Would it be the same effective zero reading as when the two leads touch?
Incidentally, would the in built continuity tester (which beeps) on continuity do a similar thing. It may be easier to use. In other words, it would beep if the red probe detects a short .
What do you mean by Red/black points? All connnections red or black?
Many thanks again...
mike the bike:
Take the fuse that blows out.
On the DC volts scale, measure both sides of the fuse holder. One side should read 12v (ish), the other side should read 0V. That's the dead side
On the lowest ohms range, measure between the fuse holder dead side and battery negative.
I suspect you've got a low resistance. It shouldn't be.
If you've got a low resistance, then it's a case of unplugging things and checking if that low resistance fault clears.
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