NOTE: This kit will not work with the DMC improved 108388N.
easy-to-install kit reduces the electrical strain on the main headlight switch
108388 (Lights Master Switch, or LMS) by supplying power to the running lights
and side markers through a heavy-duty relay, rather than through the LMS. Normally, the running lights and side markers draw about 4 amperes of power
through the LMS. With this kit installed, the current draw is reduced to only
the amount of the trigger current for the relay is about 70 milliamps (or 1/50th
the amount of current!). This reduction in current flow through the switch
prevents overheating and can extend the life of the LMS. This installation does
not alter the operation of the running lights and headlights.