Another issue. If you install the solid-state regulator, the only disconnect from the generator is the key switch. If you leave the key switch in the on/run position, and the motor is not running, the generator acts as an electric motor, drawing juice from the system. It is also trying to turn the motor over but, does not have enough power to do so. It sits idle, in a dead short situation. Damaging the generator in a short time. This can be overcome with an extra switch as a disconnect, but that one more thing to remember to turn on and off at the correct time. If you find the correct regulator, non-solid state, [Good luck] this is not an issue. My advice is also, unless it is needed, I would not install it.