Electrical (Tech Blog)

Lucas 149SA 47SA Ignition Switches     The Lucas 3 and 4-position ignition switches designated as 149SA and 47SA are very similar in design and appearance. Used extensively in the 1960s and through the early 1980s, Lucas supplied the British automotive and motorcycle industries with many common switches. The 47SA was most commonly associated with automotive […]

…specification Triumph 500 and 650 models with 12 volt battery. Ammeter and grommet hole. 5/16-26 CEI bolt holes. 59579S (99-9971A) 1966 late specification Triumph 500 and 650 models. Ammeter, (1)…

By Dave Porter, Customer and Technical Support at The Bonneville Shop Converting Your 6-volt British Motorcycle to 12-volts can be a bit of work.“The conversion requires not just an upgrade of charging system components, but also auxiliary electrical components. This includes light bulbs, horn, fuses, and in some cases, switches, ignitions, and ignition coils.”  

By Mike Grage, Customer and Technical Support at The Bonneville Shop LED Troubleshooting – We didn’t have LEDs when I started professionally wrenching on motorcycles over 30 years ago, but I most certainly wish we did due to the low power requirements.  Done right LED lighting can make riding a battery less bike at night

…with the new switchgear. With the advent of directionals, and an eventual electric starter, the switchgear consoles evolved over the years, as did the motorcycles. The following section chronicles the…

…tank, the wires are the pipes, the stator is the pump, the key switch is the tap, the zener diode is a pressure relief valve, and the diodes in the…

…full color, easy to follow wiring diagram with every harness and the harnesses do follow the OEM color codes. The wire colors may be a different shade than original however,…

…run on full (high) beam and will not go to dip (low) beam. A few days ago, a client dropped off a 1972 A65 BSA (Lightning model) due to it…