Im swapping out my old stock gauge faces with an aftermarket one. its got all the same stuff its just all white and illuminates thats the only difference. my question is, do i need to disconnect the battery before i start to plug and play? and, if anyone has done something similar, is it simple? it looks like i might need to join some wires but i have connecters for wires. should i go from the top or bottom to take off the dash stuff? thanks for any information. and i did try the search tool.