I installed a new Infinity 5761a 6 channel amp in my 2004 F150 Screw, to a Kenwood in dash dvd/navigation unit.

The amp powers up via the receivers power connector, I have a great ground, but with or without the RCA cables plugged into the preamp and the amp, there is no difference. In other words it's not working and I can't figure it out...any help or ideas would be greatly appreciated....

Cheers,
Scott

 

go back to the very basics:

fuses in place?
speaker wires hooked up correctly?
amp gains turned up from "0"?
signal getting through the RCA cables?

Swap in another amp and see what happens...

 

Your problem is that Infinity amp they are scrap.

Just kidding, Onbelay i had to do it.

I have a Kenwood HU also, on mine I have 2 sets of rca pigtails and 4 plugs directly in the back of the unit, no pigtails, make sure you have the amp hooked to the right spot. Also if they are for the subs there is probably a way to adjust the signal or something to them. My HU has a scale for subs, I haven't gotten that far yet, so I don't remember what it does, i just remember seeing it.

 

That's the problem....no signal through the RCA Cables....nothin...nada...everything else checks out ok....

Shtrdave, may have a point....