Where was the opening in the engine compartment? Can I get some pictures please?I ran the positive wire through the opening in the engine compartment firewall - fused in line - and connected to battery positive, while connecting the negative lead inside the head unit cavity. I imagine this would be the same in any Cherokee.
I think we're talking about the same spot...Since it was a compact amplifier, I secured it behind and to the right of the head unit inside the dash. I tried to make sure they are not too close so as to share their heat generation. I can still easily get to it if needed by popping the head unit out.