Remote Amp? 2005 Dodge Grand Caravan

Hi, just trying to replace a non-functioning OEM stereo with an aftermarket. Stereo powers up, no sound. I didn't think I had the Infinity system (No logo on stereo) but when pulling the rear speakers, not only noticed a silver box inside the speaker well, but another 2 1/2" tweeter. (looks suspiciously like an Amp/Crossover) Did the Crutchfield and Local audio shop thing and they both told me that these vehicles don't have an 8 speaker system. I've physically counted 2-dash, 2-door, 4-rear. Anyway, not trying to build a competition system, just trying to have music for the commute. :) Any help would be appreciated. sto22

It's in the post title, but the vehicle is a 2005 Dodge Grand Caravan SXT. Basic AM/FM/CD with 2 dash speakers, 2 Door speakers, and 2 6x9's in the rear with separate 2 1/2" tweeters. All factory stock.

Did you power the amp turn on wire? If you purchased the appropriate wiring harness for your vehicle, it will be a blue or a blue/white wire. It needs to be connected to the blue/white wire of your deck.

Thanks for the reply, I've bought two wiring harness's. The first was a Metra 70-6502 from a local car audio shop. (It was recommended) It doesn't include a remote amp turn on (blue/white), only a solid blue for power ant. Kinda funny since they told me to use the blue/white also. :) I second was a Wal-mart harness, which did have a blue/white remote amp wire, but it doesn't help either. I get power, can see an FM station is locked, etc. Thanks again for any help.

I found this, mentions you have to run a separate line to the amp in the driver side kick panel? http://www.crutchfield.com/p_120706504/Dodge-Jeep-Chrysler-In-dash-Stereo-Integration-Adapter.html?tp=3486

Tried this as well, no luck. http://www......com/item_12680_Metra-70-6503.html?utm_source=bingshopping&utm_medium=bing&utm_campaign=bingshopping Guess I'll look for the amp in the kick panel and try the Crutchfield adapter posted previously.