1972 buick macabre limited.

Redo your wiring job so that they work! Did you check the fuses?

There's nothing wrong with your wiring job unless you used like 16 gauge wire LOL you need to use 12 gauge if they are heavy powered and not LED lights LED lights are fine on 22 Gage but I can guarantee you since you said it was fans it's probably cooling fans and they are drawing too many amps for your switches and burning them up you need to get to at least 20 amp toggle switches or you could get a 30 amp and run one that's what I do and I have to 15 in cop car fans on my Silverado.. I have both of them on 1: 30 amp switch and they draw 9. 7 a piece and it does fine... Any automotive store has 25 and 30 in probably 20 amp normal ones are like 7 amp I think they cost about $10 a piece for a 30 amp O'Reilly's has the best selection of I've seen... Or you can do the more expensive reliable way and actually run two relays then you could use a little bitty switches and then big wire from the relay to the battery and then and then to the lights and then wire a switch inside with little bitty wire just to turn on the relay that's how the factory does it.