ER6f electrical problem

[fatjames]

Hi, I've noticed I've got a problem. When riding, if I hit a bump my headlight will go out. I assumed it was just some wiring, but even switching to full beam (a separate bulb) will still give me nothing. I can get them back on by clutching in and hitting the starter, this works every time and I've been doing it for a few weeks. It's becoming more regular now and with smaller bumps.

I've checked the wiring coming from the headlights and followed it back as far as I can without removing the tank and it all looks ok. I'm drawn to thinking there might be a problem in the switch gear.

Any ideas would be great.

Thanks
FJ

[barrkel]

Dodgy relay?

Power cycle would be resetting the relay.
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Bikes: S1000R, SH350; Exes: Vity 125, PS125, YBR125, ER6f, VFR800, Brutale 920, CB600F, SH300x4
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[hmmmnz]

got a multi meter and a wiring diagram??

if not buy a meter, one with a diode test (makes a beep when you have a circuit) like this , great for the bike, or car, auto ranging, or if you want something a bit more universal then this ac/dc amps as well,

diagram is here

also a tin of contact cleaner is a must, unscrew your handlebar switches and give it a good spray in there
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[fatjames]

Hey, I have a multi meter an I now have a wiring diagram. Once I've cleaned the contacts, what am I looking for with the meter?

Thanks

[jeddy11]

Agree with the loose relay dodgy earth, the main lights are off untill you start it up then the main light comes on, so hitting the starter must be resetting the relay as said earlier..

Also then it must rely on a signal saying the engine is runing where it gets that from im not sure ?

Interesting qestion..
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[fatjames]

Ah, at this point it might be worth noting that I have a phone charger wired in to a switched source somewhere. Sounds likely it's the same relay. I bet it's under the bloody tank! (I've just had it off to plug the PAIR valve and it wasn't all that fun!)

[hmmmnz]

what you describe, first i would check the switch on the handle bar,
just unclick the connector
then i would test from the blue/yellow wire (feed from relay) to the
red/yellow wire (low beam) and then the red/black (full beam)
click between the full and dip a few times and make sure its always getting a good connection,

if that tests out ok, (probably will, but its nice and easy to get to)

next is checking the continuity between the relay and the switch
so one probe at relay end and the other at the switch end on the blue/yellow wire, give the loom a wiggle at the point wher the loom could move, (it'll probably be ok as well)

next check, both the headlight relay and the starter relays, they are linked in a stupid way i might add, if the starter relay (secondary relay) de energizers it also takes out the negitive to the headlight relays coil, and which in turn de-energises the headlight relay,

thats why if you click the start button, it re-energizes the starter relay, which completes the circuit again,

the most likely problem is one of the connections around the relay box area is dodgy, this should be under the seat somewhere,

stupid design, the headlights should be completely independent of any other part of the electrical system
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[fatjames]

Thanks mate. I'll have a play on the weekend and report back.