I checked the extension cable, and all the wires were wired to the correct position, (1-1, 2-2, etc...)

The strongest signal I get on the meter is 3 out of the 7 bars.

How do I know if there is an antenna amplifier wire that needs to be hooked up, and what does it hook to.. the blue power antenna wire?

I will call the shop on Monday if we can't figure it out before then.

Any