Need help with amp.

[Hurley91]

I bought a Rockford Fosgate 401s amp off of a friend. He said he promises it works, and he'll give me my money back if it doesn't. Anyway, I can get it to work. I have a good power, and remote connection (both show 12v). But it won't light up, or power the sub. It doesn't make any noises, or any protect mode lights on. Any solutions?

 

[Th8785]

double check your ground.

 

[Hurley91]

double check your ground.

I'll double check it tomorrow. I noticed the Rockford Fosgate emblem is lite up, but not very bright. I tried using a different RCA cable, with no different result. I played around with my Alpine headunit to make sure the sub is turned on.

 

[FL BOY]

Def check your ground. You may have to sand it to bare metal if you have it on a painted surface

 

[MADDOG]

What's your power source? The stock harness?

 

[Hurley91]

What's your power source? The stock harness?

I have an Alpine Headunit, hooked up to an aftermarket wiring harness, connected to the factory harness.

 

[Hurley91]

Def check your ground. You may have to sand it to bare metal if you have it on a painted surface

double check your ground.

It was the ground. I took my Dad's Power Probe out and tried it out for the first time. Thanks for your help guys