are they for car/home? if they have two prongs ones power and ones ground, probably wont matter which is which if its not labeled..and if it doesnt you got a 50/50 chance lol you will need to set a switch and run power to the switch from a key hot location, the rear defroster has one there are others also.
2003 Cobra Vert (Redfire) #3938 of 5082 @ 05/27/2003
472rwhp/493rwtq -Modification List
- Dyno Sheet
2012 Mustang 3.7L M6 (Kona Blue)
2011 Ford Edge Sport (Red Metallic)