Help! headlight, tail light, & instrument lights not working

[Dylan]

Hi there guys
Looking for some advice
Recently mylights  have been a little weird, switching off and on while riding, at least once per ride
But now they wont turn on at all, front back & instruments, hi & low beam.
Fuse by battery is ok, is there a relay i should check & where is it.
Ive put a multitester at a headlight connector and there is nothing.
Anyone has an idea what it could be.
Many thanks
Dylan

[AdieR]

Going by the diagram for the later bikes, you haven't got a multi-plug connector adrift by chance?  Have you checked your other (headlight / taillight) fuses? Do your indicators work?

[Fazerider]

Hi Dylan, and welcome to the forum.
There is a good chance your problem is just down to the switchgear. If you're lucky, squirting a bit of contact cleaner in the light switch and working it on and off for a while will clean the contacts up. If that doesn't do the trick you may have enough corrosion in there to necessitate dismantling it... it's a pain in the arse to get back together afterwards though.
Other possibilities: corroded contacts in the connector box under the tank or a broken wire at some point where the harness flexes as the steering moves. But have a go at the switch first.

[Doddsie]

Bad earth, its always the earth, any problems with wiring its always the earth!!

[Dylan]

Ive found the problem.
The brown connection block under the front of the tank was burnt out.
Not sure what caused that to happen.
Ordered new block

[Fazerider]

If the connector block has cooked itself it's because of poor contact between a pair of terminals in there. If you're going to re-use them give both halves a good clean and squeeze the female side so it grips the spade firmly, when they're carrying currents in excess of 10 amps an imperfect contact can get very hot.

[Dylan]

It was completely cooked, so ive opted to replace the block