Well, it's definitely not the extension cable. That's sitting on my desk. I'm 99.9%™ sure that the antenna is not amplified. The Pioneer had really good reception, and all I did was swap it with the tuner module. I also did a search and poked around Scosche's and Metra's websites and didn't see any mention of it (they'll usually have adapters, etc. for that kind of stuff).
I guess that narrows it down to either a bad module or installer error
. I'll dig through the dash to double check the wiring.
Thanks for the reply Tony...
Phil