Is your old 7.3L Power Stroke hard starting, tired of replacing that factory glow plug relay only to have it go out again before the Cold Weather season ends? Well Moonlight Diesel has the answer, replace the factory Glow plug relay with a heavy duty 100 amp relay. This heavy duty relay will replace the factory relay and provide you with years of service over your old factory one.  
Fits Ford 7.3L Power Stroke 95-03.
Super Simple to Install however some modifications may be required to fit Power Stroke plastic shield back in place.