I have acquired a lx665 and I need to put in a 12v plug in for the beacon and one also for the rearview camera. What is the easiest way to wire these in? I don't have the operators manual yet, should come in a couple days. Is there a cheaper place to buy the service manual than the dealer? He wants $500.00+ , I have seen the e-mail versions for $30.00 but I prefer the paper copy if I can afford it. Thanks for any help. Jerry