Quote:
Originally Posted by seedy100
Electrical Extras
1. Uprated headlight bulbs (100, 80's)
2. Heated Grips (Oxford)
Grips are wired through the fuse box to come on with the ignition
I had the grips on yesterday.
What do you think is it the bulb/grip combination?
Do I have to look for something else?
Can anyone help with a circuit diagram of how to wire the grips through a relay, and will that reduce the load on the ignition switch?
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I reckon that there be your problem.
HOW are the grips wired to the fuse box? Explicit detail please

Photographs if possible.
On my pointy, at first, I cut into the orange wire, and plugged the grips in series with that. The orange wire goes from the fuse box to the ignition barrel.
Being seriously tight with all things electrical, I just happened to put a DMM (with Graph function - expensive type) across it with it in different situations. With the grips at half power, and engine at idle, the current draw was so unstable that the LCD panel on my pointy kept vanishing & re-appearing. ****** if I'm riding like that! So I changed it, and put a Bosch relay (40A) so that the coils were now in series with the ignition. The NO legs of the relay were then connected to the battery & grips in series. Hey presto, result.
Basically, if yours is wired to go from fuse box to grips to ignition, I reckon that will be the root cause of your issue. Not so much that the ignition has failed, more that the grips take too much juice. On mine, below 7.3v down the orange wire, and no LCD.
I can happily give detailed explainations of how mine is fitted, with/without diagrams.