infinity stereo replacement help

I replaced me stock infinity radio with an after market. My door speakers don't work and only the tweeters work in the back. Can somebody tell me why this happened. And how can you replace the back infinity speakers? The spakers have a board around it with four wires connected to a harness. This system is very new to me. NOt familiar with the system. Somebody help

the "problem" that you are experiencing is due to the fact that the infinity system in the caravan uses speakers with built in amplifiers. The door and hatch speakers have built in amplifiers.

I think there are many write ups in the forum with regards to this issue... do a search under "infinity" you should find something. good luck.

cap.

had the same problem don't go crazy about and leave the fac speackers in. u need to hook up the power ant wire off your deck to the one wire u didn't use if u bought the wire adapter for your after market radio and make sure u use the factory ground in the van i took me a week to get mine to work and thats all it was. i'll check back to see how u made out