I have replaced my radio w/ Nav and have installed the new unit however i have no speakers. I would like to know how to energize the speakers, i guess they go thur an AMP in the LTD version Xfire. even thou i know wining for the speakers, power, acc and ground there are still a couple i know their functions and was hoping the others might be a AMP power and speed adjust for volume, etc.. I really dont want to mess with control modules