british motorcycle tri-spark wiring | British Motorcycle Tri-Spark Wiring and Ignition Upgrade | British Motorcycle Tri-spark Wiring diagrams cover coil polarity, kill switch connections, and boyer or tri-spark ignition for BSA and Triumph twins.
tri-spark tri-0006 ignition | Tri-Spark TRI-0006 Ignition Upgrade for Norton Commando | Tri-spark Tri-0006 Ignition wiring explained – what changed from the TRI-0005 series, why overheating was a problem, and whether the new unit fixes it.