Hi i have been getting parts for a serpentine system and i think i have everything figured out. Except for the alternator wiring i read some threads on it but im confused. I know there is a adaptor for the plug an my truck didnt have a factory guage. When i got the set up i grabed the plug for the alternator so i could splice it in. That was befor i knew how much was involved so i will just get the adaptor but the plug i got only has 1 wire on it and the adaptor looks like it has more than that. Is it right? I just want to make sure i get all the right parts for the swap befor i start. I drive the truck daily an dont want to be waiting for parts. With the adaptor harness is it all plug and play or do i need to do more wiring? Any help is appreciated thanks.