Blitz supercharger switch diagram

[CrankyOldMan]

Sorry that I missed this, I don't seem to be getting notifications anymore.

The schematics are just the electrical connections, not the circuit board layout. If you're never going to use the "med" or "high" engagement positions, then you can just connect about 6600 Ohms (I think 6800 Ohms is the closest standard value) across pins 4 and 5 and about 3500 Ohms (3300 Ohms is the closest standard value) across pins 3 and 4 on the plug end. You could probably just stuff the leads from the resistors into the sockets and hold them in place with tape or hot melt glue. Pin 5 is the far side from the LED connections. See attached "art".

If you want to be able to turn it off, you'll have to get a switch and some soldering equipment to make that work.

I have the parts from my unfinished version in the garage somewhere, I may be able to get some pictures of it to show you what I was going to do for reference/inspiration.