my italjet conquistador with a 90cc Minarelli keeps blowing bulbs.
Three wire like a V1, EEB (External ground, External coil, Brake,) system. Unlike the V1, if you bypass and ground the brake it starts, but won't stay running. If you leave the brake wire open, bike runs fine.
Only needs coil wire to run, can leave power and brake open.
All new wires, all fresh grounds, no shorts, working coil and CEV stator (I have two identical stators and coils, both tested, checked, and same outputs to eliminate a coil or stator problem.
New points, condenser (also checked and working fine.)
Tried wired to handlebar switch, and wired direct eliminating switch, same results. New brake switch, works same as old brake switch, both function properly.
Basically, the wiring is fine. Everything that could go wrong has been checked, replaced, rewired, regrounded, etc.
Used standard 6v and 12v bulbs, both blow. Tried led bulbs, melted.
One bulb blows, then overloads the other and blows. (Taillight blows, headlight blows next, and vice versa.)
Tried two bulb taillight, one for brake, one for light, taillight blows.
So I'm thinking inline resistors to overcome whatever surge is killing the lights, but I have no idea what type to use, and looking for electric gurus to help me out.