I have a after market radio head that i am trying to put in.
but found out that i have the infinity speaker system in my car.
so the radio will turn but i get no sound because the amp will not turn on. what can i do? or what can you do to help me.
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Sounds like your Gr Caravan has the premium sound package. You likely haven't hurt anything - but you may need to modify the wiring a bit. The speakers have a tweeter speaker in the center of the main speaker and the wiring goes through that. However, it only worked with the premium package. Go in to the speakers and move the wiring connections from the tweeter to the main speaker. Your other option is to replace the speakers.
I had this same problem. After reading other ideas and some trial and error, I finally got it. Most Caravans have an Infinity system (the speaker grill will say Infinity on it) ,which uses an amplifier to run the door and rear speakers. I had to ground the clip wire that was originally attatched to the strap ground on the factory installed radio. Then I also had to hook the wire on the new radio for power antenae (blue and white on my unit) to a blue wire on my new harness. This wire came from the last wire of 7 wire harness that had the other 6 wires for speakers. The original wire appeared to be green/red on my vehicle. After I connected both, the speakers cameon and sound great again
U will need to enter the radio anti theft code, this lock out was triggered by the loss of voltage to the radio during the battery change, this code is unique to each radio and cam in the owners information packet when the cat was sold new.
I had the same problem with Dodge Grand Caravan as well. I have a 2001 GCV and these radios go out all the time, plus each speaker has separate amps which some speaker will stop working. You will need a new stereo, however the dealership will charge you over $350 for the same replacement. I chose to go to BestBuy and buy a new Stereo for around $100 which has iPod connections which is a plus. Next problem!!! Since each speaker has its own amp, in order to get the new stereo to work, I had to install a relay by tapping into the passenger side kicker panel master amp power supply to bypass the chip. Best Buy guy will know what to do. I suggest install the stereo yourself with a kit and go back to install an amp bypass relay switch. Hope that helps.
Stock Stereos **** and Dodge make is difficult to go aftermarket.....Good Luck