pnfry55,
First, I would check all the usual suspects. Roll over valve, fuel petcock, vacuum line to petcock, fuel cap vent, fuel filters(all three), coils, crank sensor, sparkplug HT wires and caps. All electical connections(side stand switch, clutch switch, ignition switch, engine cutoff switch). Battery condition. Wireing harness around the headstock(broken wires due to pushing/pulling on harness). Also check the plug for the alarm unit located in front of the battery box. Corosion in the plug can cause an intermitent short on the gray with green-dot wire that goes to the Igniter(there is a wire that loops around on the back side of the plug). Check all these things before throwing money at it. Also, the Igniter can be tested at a Triumph dealer. Baxter Cycle (
www.baxtercycle.com) would be a good source for used parts from breakers. I've heard of someone that has rebuilt Igniters to swap, but I'll have to search for them again, I think in the UK or Europe.
Hope this helps.
Erv
Deep in the Heart of Texas!!