I bought a Alpine 3550 at a garage sale and I want to use it in my truck but it doesn't have the power plug. I checked with an installer buddy and he said those models had 2 powers, 2 grounds and 1 remote turn on. Does anyone have a manual or know where I can get one. Or does anyone have a plug from a non working unit. The connector I was told is a jst with 2 rows of 3 connecttors.