If the unknown wire is indeed a ground wire, it may well show +12V when power is applied to the other side of whatever it is connected to. The high in...

My RT required 19 screws removed to pull the left side fairing to even see the battery. It was great going down the interstate, but it was heavy. Has ...

If the clutch carrier-flywheel is not in the correct position relative to the crankshaft, the OT will not appear in the window at TDC. A simple check....

When you say "leave the power on," do you mean leave the power on with the bike not running? That will probably cook a coil in a hurry.

On my 83 I grabbed one off the shelf at probably Auto Zone. It's still working years later so it may be OK. I don't remember much about it other than ...