One expected job and one not today.
I had bought a new dual 2.1A USB socket for the KTM as the old one was only about 1A supply, and newer phones like a bit more than that. Pretty straightforward to pop the headlight unit out to get to the accessory plugs behind it to connect into, and the socket lives in the little glove compartment on top of the airbox.
I also had a quick look on the SP3's tank to see how much was in it and give it a stir up. I then randomly decided to check the lights on it and found that the brake lights weren't coming on with the front brake. Working fine with the rear so lamps and fuse fine, so had a waggle at the connections on the lever, to no avail. The connector lives in the front fairing so the bodywork had to come off. Not a huge task: the fasteners are mainly Dzuz quarter turn one so quick enough to remove it all. Played about with the connector to see if it was just a bad connection but no joy. Split the plug and checked the supply: good 12V coming to it. Checked the continuity and there was no change when pulling the lever, so something awry in the micro switch itself? Took the whole lever assembly off and had a look at it.
Nothing obvious so the switch came off and I found the issue. Rather than the lever directly triggering the switch, there's a ball bearing lives in a hole in the housing that connects the two, and it had rusted enough that it wouldn't move, It wasn't pushed by the lever, it was only the return spring of the micro switch that pushed it away when the lever was pressed to complete the circuit & trigger the light.
I measured the ball at 5mm, and the closest I had was 4.7mm, I reckoned the rust would add a little to the diameter so it was probably close enough. The smaller diameter would make it trigger slightly early, as long as it held the switch open when it was meant to.
It works fine as it turns out, so job done. Well, still have to re-assemble the bodywork and bleed that caliper, but at least it's the single one and not the linked side...
