these are 8 volt leds for your easy install 3 leds 580 680 780 4 leds 850  980 1050 1080 1250 1280 white looks   brighter cooler  now if you have sx 450 550 650 750 leds will work have pull wire leads down sleeve and solder . if your not use to that .check online .thanks for looking have audiophile day .