Grand Prix 500
Main Motorcycle: Hinckley Bonneville (Carb
Join Date: Jul 2009
Hi - I have a 62 T100SS which needed a new loom and much other work but I think I have it running sometimes (it has a mystery fault; there is fuel, spark etc but it ocasionally wont run....). This has lead to my trawling the net and people's brains extensively. There is a pdf I have uploaded and attached it here. It concerns much about what you are querying. If you think you fried something, it might be as well to hot wire it just to eliminate that probablity.
Fit an easily removed wire from the battery live to the + on the coil. Rather thatn trying to start it, just put a working plug from anything in one of the caps - then the other to be sure. If there is nothing (you sshouldn't need the switch on for that test) you might try either a voltmeter or light bulb (I image you are on 6v?) at the distributor live feed. With the ign on, if there is no reading/illumination, trace that wire back to the coil. Test that wire for contuity. And repeat the power test with the feed to the coil (I doubt the coil will be burned out - if it is CHinese it may be substandard so dig deep and fork out for a decent one - trisupply seem OK).
If there is no juice there again test the wrie for continuity and trace it back to the switch - keep repeating these tests until you reach the battery. If all the wires check out OK, (zener and stuff i beleive are all to do with charge, not ign or light etc) then it could be the coil, condesor whatever - test one at a time by substitution. I have found that while I got power to the coil, the HT connection was crap so I fitted a brass screw into the wire.
So it goes on really - let me know how you get on or if owt still confuses. I have found various sites & etc that may help. As for me, I went 12v but it didn't solve any of the bike's inherent probs. Maybe soon.