2005 ford ranger.
i removed the stock head unit and replaced it with a Jvc. I'm running 2 12" rockford punch subs and a 1200 watt sony amp.
in my older civic when i hooked up my amp there was 2 12v power wires running from the CD player, one from the head units wiring harness and then 1 from the wiring harness you connect to the head unit (the kind you have to buy and use when installing an aftermarket CD player)
in the ranger there is only 1 power wire and it's the one coming from the harness that connects to the head unit. there isn't one from the aftermarket connecter that connects to the head units wiring harness. i hooked the blue 12v power wire to the amp, ran the ground, ran the 4g power wire to the battery and ran the RCA cables and nothing, the amp light is not coming on. i know its not the amp or subs, both are brand new and worked fine in my friends civic when i checked them
help me out!