Basic install help

[Camora]

It’s been twenty years since I played with subs and amps.
In an old classic car so everything is easy to get to.
Stereo is a basic JVC unit, amp is JVC sub is sound stream.I have the front speakers running directly from the head unit.
I want to run rear speakers and a sub via the amp. I have power to the amp (the light is on) but I can’t hear anything from the rear speakers or sub.
Appreciate any help

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[Name'sDEEZ]

From the little that i know. It could be bad grounds or you have speakers and subs connected at the same time and some amps cant do that.

Mine was like that. I could be wrong

 

[Kickstand Premium Member]

What is the model number of the amp, sub, and rear speakers
How do you have it wired in
If your getting power but no sound then it would indicate a signal issue
Either from the RCA's or the speaker wire
Or possibly have the amp overloaded

 

[Scott2021]

check radio settings, is the subwoofer turned on? Bench test the amp.