The red led 1157 trailer bulbs I bought, I will be using in my 67 barracuda and sons 69 barracuda. I also bought the amber ones for the front. I bought extras of each just in case of failure. Damn things were cheap enough. When I hooked up my trailer with these at night for the first time I thought my brake pedal was stuck on lol. It wasnt. The low brightness on these is close to stop lamp brightness. The stop lamp brightness is really bright.