Hi, This will be your smallest problem of the day!! I have an MOSFET50Wx4 -- MP4029 radio & speaker installation in our Roadstar caravan. Due to vibration on some roads we appear to have lost our FM/AM tuning knob [RH side] Please advise where we can obtain one in or around Fremantle WA. Thanks Regards Brian Wales

Check for a amp under one off the seats

Hi, did you check all cables?

When you have no sound on the radio the first thing to checkl is the speakers. Using the smallest voltage battery you can get hold of and handle easily (AA or AAA) conect +(ve) and -(ve) terminals of the battery to the 2 speaker connections. If the spreaker is OK it will produce a cacling sound. If non, replace.
If speakers are OK the trace connection from radio/amp to speakers. If OK then radio needs attention.

Will the color code do, or do you need the actual wiring diagram?
1997 Dodge Caravan Car Radio Stereo Audio Wiring Diagram
Car Radio Constant 12v+ Wire: Pink
Car Radio Switched 12v+ Wire: Red/White
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: Black/Yellow
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Green
Left Front Speaker Negative Wire (-): Brown/Red
Right Front Speaker Positive Wire (+): Violet
Right Front Speaker Negative Wire (-): Blue/Red
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown/Yellow
Left Rear Speaker Negative Wire (-): Brown/Light Blue
Right Rear Speaker Positive Wire (+): Blue/Orange
Right Rear Speaker Negative Wire (-): Blue/White

Good day ma'am, hi, hooking up an extra amp. on your radio is done by audio professionals, but if you can remove the radio out from your ford, you can install that extra amp. Just follow the diagram below. You need to find line out of your radio to line in of your kicker amp. connect them using audio shielded cables. connect your speakers to the amp. I guess you this already.

YOU WILL HAVE TO TRACE THE WIRES OUT, DO U HAVE A SEPERATE AMPLFIER? MANY OF THESE VANS DO, IF SO THAT IS THE PROBLEM.
HERE IS THE WIRING COLOR DIAGRAM FOR YOUR VAN
1998 Dodge Caravan Car Radio Stereo Audio Wiring Diagram
Car Radio Constant 12v+ Wire: Pink
Car Radio Switched 12v+ Wire: Red/White
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: Black/Yellow
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Green
Left Front Speaker Negative Wire (-): Brown/Red
Right Front Speaker Positive Wire (+): Violet
Right Front Speaker Negative Wire (-): Blue/Red
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown/Yellow
Left Rear Speaker Negative Wire (-): Brown/Light Blue
Right Rear Speaker Positive Wire (+): Blue/Orange
Right Rear Speaker Negative Wire (-): Blue/White

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

1996 Dodge Caravan Car Radio Stereo Audio Wiring Diagram
Car Radio Constant 12v+ Wire: Pink
Car Radio Switched 12v+ Wire: Red/White
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: Black/Yellow
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Green
Left Front Speaker Negative Wire (-): Brown/Red
Right Front Speaker Positive Wire (+): Violet
Right Front Speaker Negative Wire (-): Blue/Red
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown/Yellow
Left Rear Speaker Negative Wire (-): Brown/Light Blue
Right Rear Speaker Positive Wire (+): Blue/Orange
Right Rear Speaker Negative Wire (-): Blue/White

Anon, learns that cars new have like 4 to 10 radio options day1 new
car and the service manual covers all 10
and the 10 radios are all radically different. and so is the harness there and all wiring end to end not the same.
learn that first
the read the service manual
hacking in a new radio takes skills and one is having the manual in your hands or the PDF on the screen of a PC..
called wiring schematics for this 1 car.

remote, CD/dvd options.
truck amps. and more.
there is no 1 kind of system on any car,

check out 2002 GCVan
very very odd speaker here with 6 lugs. << warning ALIEN to the MAx)

ALL TECHS KNOW THIS, AND PUT IN ALL NEW PARTS WHERE NEEDED
FOR SURE THIS 6 LUG ODD DUCK.

HI.
In the caravan are 2 types of Radio.
1. Normal sound system.
1 Premium sound system.
Note: If you don't want to cut the original wires,
You can buy a harness connector to install the aftermarket Radio. The connector are made by aplication, and are plug in.
The colour of the connector are the same colour with the Aftermarket Radio. Just you need to soldering or just put joint connectors.

Normal: colour of wires.

Pink = Battery voltage.
Red/withe = Ingnition Voltage.
Brown/red and Dark green. = Left front speaker.
Dark bku/red and Voilet = right front speaker.
Brown light blue and brown/yellow. = left rear speaker.
Dark blue/orange and dark blue white = right rear speaker.
Ground is a single wire behind the radio.

If you have a premium sound. You need to use the front speaker out to connect the speaker on the door and the speaker on the dash. To complete the 6 speaker.

OK... I hope this information work for you.

Thank you , For use fixya. Rate please.