- Dec 8, 2017
I have a 1974 Commando. Bike is (was) running well with no issues. I pulled into the driveway after a short ride to run some errands and was just about to turn the bike off when it died. That has never happened before. The bike had been stopped and started twice with no issues during my ride. Removed the left side cover to check battery voltage with multimeter and noticed that one end of the plastic inline fuse holder had partially melted! I thought that the connections in the fuse holder, which is pretty old, might have corroded resulting in a poor connection and heat build up. I purchased a new plastic inline fuse holder and a new package of 20 amp SEF fuses. I replaced the melted inline plastic fuse holder with the new one, installed a new 20 A SEF fuse, and turned the key to start position. Lights and horn worked. Bike started on first kick, ran for 3 or 4 seconds then died. The new fuse had blown. Replaced the fuse with another 20 A SEF fuse, but from a different manufacturer. Lights and horn worked, bike started briefly again and then died. However, it was not visually obvious that the different style of fuse had blown so I checked it with voltmeter and got continuity across the fuse but no horn or lights on bike. Went back to the original type fuse. Same deal. Lights and horn worked, bike started right up, ran about 5 seconds and died. Fuse had blown. It looks like even though both types of fuse are labelled 20 A SEF, one might be a bit more robust than the other? I'm not sure what the heck is going on but before I start working through the system, any hints or advice that might narrow the search would be greatly appreciated. The bike has stock points ignition system and has a Podtronics Rec/Reg.