When the wires are cut to remove the fogs, do you need to leave a certain length to facilitate future re-installation. If I bought a pair of used fogs off ebay with cut wires, how do I install them into my car? If the wires were cut too short does that make the fogs difficult to install/wire? How does one go about hooking them up if the wires are too short? I am completely clueless with wiring etc. thus the elementary question. Any and all info would be appreciated, thanks.