I bought a shift light for my single cylinder engine that is rated for 4, 6, or 8 cylinders. Since my engine uses a "wasted spark" ignition, with the spark happening at the top of the exhaust stroke as well as the top of the compression stroke, I thought I'd at least be able to set it at 4000 rpm (It's adjustable) and have it come on at the engine's 8000 rpm.. But it didn't happen and the light doesn't come on at all at any rpm.. So, I read where someone suggested replacing the correct resistor in a similar unit and you could make it a 1 or 2 cylinder shift light. Here's a front and back photo: The instructions have you cut both the brown and orange wires for 4 cyl engines. For 8 cylinder engines you don't cut any wires, and for 6 cyls you cut the brown wire only. The three white wires go to the rheostat thingy for adjusting the rpm you want it to come on at. So then, looking at the photos, is there a way to convert this to either single or 2 cylinder operation by replacing something on the circuit board?
I'm not saying that I can figure this out, but the color coding on the resistors is really hard to make out. A wiring diagram would make it a lot easier for someone to interpret what the heck this circuitry is doing.
The cylindrical looking things with the different colored stripes on them are the resistors. It looks like there are 5 or 6 different kinds there just looking at the placement of the stripes on them (Need to be able to see the colors as well to really know their ratings). It's kind of irrelevant though. Really need to see a wiring diagram to know what is going on there. The board itself is not very transparent so you can't see where the wiring is running......and I really hate trying to figure out what a circuit board is doing just by following the wiring (some people can do it but my brain doesn't work like that).
If you need help I can recommend Sonex, 30m before Du Ek Sam Scooter outlet. Very skilled electronic shop.
