Electrical failure gt550

[steppe]

Gday gents
A few days ago i took my '76 550 to a meeting on a sunny sunday.
After about 25 miles and at a speed of approx 50 mph, my bike went completely dead on me..
I put myself on the side on the road tru the traffic as good and bad as i could and after the " this could have gone really wrong" feeling was away, i put my key contact off and on and suddenly all power was back.
I continued my ride and the bike behaved the rest of the day (a ride of about 120 miles)
I didn t use it since but nor looked into the problem, so if any of you gents has a clue or some advice, fire away, please..
(My first idea would be looking at the key contact itself, or is there a main relay somewhere?)

Thanks in advance,

Steppe

[canaletto5]

I suspect the contacts on your ignition switch are either very dirty or worn out. If you have the skills, take it to bits and check or source a replacement. Kev

[Kettletimes3]

The keys are quite small and I have seen owners riding these bikes with a bunch of keys attached,It wears the mechanism out.

[graseal]

I had an ignition switch do this, one min it worked then not, took it apart, full of crap, 50yrs worth.
I got a used one, took apart, cleaned and swopped the key mechanism over.

hope thats some help.

graham