Random fuse blow....

[natemoen]

So the other day was out riding and had just filled up with fuel and was heading out of the parking lot and the bike died. Still had power so I thought I had somehow killed it idling through the parking lot. Hit the ignition button...nothing. Rolled to a parking spot and found that the 10 amp ignition fuse had blown.

Where is the most common place of failure in that circuit?

[BA80]

My guess would be that rats nest where the headlight used to be or the kill switch.

[dbeardslee]

On the standards there's a connection inside the headlight bucket that likes to get hot and melt. I had that problem on mine, and it might be worth checking. It's been a long time ago, but I want to say there was a blue wire involved. It wasn't real hard to find, though.

[crazy steve]

The ignition circuit shouldn't get anywhere near the headlight bucket....

I'd look at the kill switch, ballast resistor (or it's wiring if the resistor is gone), and the coils. Check for ground faults in the red/white ignition wire.

[BA80]

The ignition circuit shouldn't get anywhere near the headlight bucket....

Not normally but with the fairing the ignition switch wires will be wrapped up with everything else. But then the actual ignition R/W wire doesn't, correct.

[dbeardslee]

The ignition circuit shouldn't get anywhere near the headlight bucket....

It does on mine. The wires from the ignition switch go right into the bucket. And if you look at the wiring diagram it shows R, BR, and BL wires coming off the switch. I thought I remembered a blue wire being part of the problem when I fixed mine.

[motoman]

So the other day was out riding and had just filled up with fuel and was heading out of the parking lot and the bike died. Still had power so I thought I had somehow killed it idling through the parking lot. Hit the ignition button...nothing. Rolled to a parking spot and found that the 10 amp ignition fuse had blown.

Where is the most common place of failure in that circuit?

Easy..........got a perodic short somewhere.

[crazy steve]

It does on mine. The wires from the ignition switch go right into the bucket. And if you look at the wiring diagram it shows R, BR, and BL wires coming off the switch. I thought I remembered a blue wire being part of the problem when I fixed mine.

Sorry, but that's not the ignition circuit. The red wire is main power from the battery, the brown is power to everything except the tail/running lights, the blue is the taillight power. If he's blowing the ignition fuse, the problem is after the fuse panel. While it's called the ignition switch, it's really a 'main' switch as it operates everything.

[dbeardslee]

Sorry, but that's not the ignition circuit. The red wire is main power from the battery, the brown is power to everything except the tail/running lights, the blue is the taillight power. If he's blowing the ignition fuse, the problem is after the fuse panel. While it's called the ignition switch, it's really a 'main' switch as it operates everything.

I see what you're saying now. You were saying ignition circuit and I was only hearing ignition.

[ViperRon]

Have you had any issues with the Tach lately or anything else acting weird. I had a tach last year would hang at 3000 and then started blowing the fuse. If you can not identify anything like a light or switch acting funny start checking wires, you have a short finding where is the issue. Most times its a place you were recently doing something.

[natemoen]

Ugh, I hate electrical problems.

Ron, no my tach doesn't have any new problems, it has always wobbled a little but that hasn't changed. I haven't done any work anywhere on it so I don't have a starting point there.

I will try and start digging around in it today.

[motoman]

Ugh, I hate electrical problems.

Ron, no my tach doesn't have any new problems, it has always wobbled a little but that hasn't changed. I haven't done any work anywhere on it so I don't have a starting point there.

I will try and start digging around in it today.

wobbly tach IS a first clur. Go thru, unlpug and clean all five of those connectots. The one for the tach is the tiny two prong plug-in behind there.

[crazy steve]

Sometimes you just get a defective fuse too... Was this an isolated incident, or have you blown more fuses since? If it was just the one fuse, you may not have a problem...

The thing to remember is don't get sidetracked. The only thing connected to the ignition fuse is the ignition (assuming OEM circuitry), so looking at other parts will only confuse the matter. The tach isn't on that fuse (or connected to the ignition in any way), so how can it be the problem?

[motoman]

Sometimes you just get a defective fuse too... Was this an isolated incident, or have you blown more fuses since? If it was just the one fuse, you may not have a problem...

The thing to remember is don't get sidetracked. The only thing connected to the ignition fuse is the ignition (assuming OEM circuitry), so looking at other parts will only confuse the matter. The tach isn't on that fuse (or connected to the ignition in any way), so how can it be the problem?

Sorry if that was confusing to ya' Steve. The small pin connector behind there, which COULD very well be causing the tach fluxuation has led me to believe that the other plug-ins may need cleaning attention also. An ignition source that DOES complete the ignition circuit akso IS the kill switch. Handle-bars ALSO complete the ignition circuit as a grounding source.

[natemoen]

That fuse has been in there for several years and never had an issue before or after. Not many miles after it though.

Wife broke her foot so I won't be free for awhile.