When installing aftermarket marker lights as replacement for the stock turn signals on Harley-Davidson which have a self canceling system, the Load Equalizer must be used. It will return amperage draw to correct factory specification, as the self canceling Brain Box must have the correct draw in order to function properly. Both the Load Equalizer I and II perform this function, while the Load Equalizer II has the added feature of allowing you to retain emergency flasher capability. It has a built-in thermostat which retains the resistors heat while your bike is functioning in the emergency flasher mode.
Note: The load equalizer I and II units are not designed to be used in parades or with the bike running for an extended period of time. The Load Equalizer III unit can be used in this situation.