Depending upon whether your alternator is a permanent field or excited field, if you have any electrical savy you could make just about any regulator-rectifier work by simply making the appropriate connections. Regulators on permanet field alternators simply shunt juice to the ground when a pre-determined voltage level is met and kick back in when the voltage drops below a pre-determined level. Excited field regulators control the amount of juice reaching the field based upon the voltage level.
