steffen707,
If you need a heavy-cable alt cutoff switch,
The 300A cutoff switch I use to disconnect the alt from the battery cost $8 at a battery store. I've seen them at Walmart for $5ish but there's no AH rating stated on those.
The purple wire goes directly to the alt's positive terminal.
You'll also need to do these for this application:
- File or grind out the interior some, to accommodate the larger + battery post. They're made for - posts which have a smaller diameter. I tried just spreading the ends of the circle but the other end of the circle doesn't widen.
- Get a nylon bushing about 1/8 inch thick from the fasteners section in a hardware store. Use it between the knob and the switch body. With the switch mostly "OFF" for alt-less driving I'm concerned the screw would vibrate loose if you leave it there, and worse, two metal plates may then separate from vibration. With the nylon bushing in between you can tighten it and keep the switch "OFF".
- Run a dedicated alt cable directly to the battery. Purple wire in photo above; oem cable and new connector in pic below. Disconnect the original that goes to starter and tape the end over. See this post for some notes re. the pic below.
