Jd 4720 radio??

GlenSteven · May 17, 2015

I cant get my radio to shut off. I have to pull the fuse every time. Was wondering if anyone else had issues with it. Im shopping for a new radio.. Just figured Id ask.

DT86 · May 17, 2015

Must be wired in wrong. Should be a constant hot (for preset stations and clock), and a key hot. Sounds like you only have a constant hot.

(Or two)

Eric C · May 17, 2015

I agree with DT86. Constant hot for station & clock. Other hot comes from ignition, so when you turn key...it sends power to radio to turn on and off. You still should be able to turn off with the on/off switch on the radio, without having to pull fuse. I'm not sure on mine how you turn on/off. Maybe push volume knob in? Or it may have on/off switch? Can't remember...never had to use it. My bet is some lazy installer found the constant and hooked both hot wires on the radio to it, rather than looking for the ignition hot too. Most dealers install the radio after they arrive. If you just got the tractor, I would call the dealer and tell them to come get it and fix it or send someone out, unless you just want to upgrade the radio. If you are going to install a new radio, I would make a map/chart of the wiring harness before you pull old one out. The old one should have a diagram on it showing what everything is coming out of radio...you can follow that to the harness for tractor and make notes of what each is on it.

skyhook · May 18, 2015

I must be reading this wrong but even if it was wired at a " constant hot", turning the knob to "off" should shut down the radio.

Is the "on/off" switch broken?

GlenSteven · May 18, 2015

The tractor is new to me.. the power button wont shut it off.. Not sure whats going on.. I really think the radio is messed up.. I shut it off and then during the day my wife will walk but it and text me and ask if I left the radio on.. lol.. So I really think it radio. Not wiring

Eric C · May 18, 2015

If the power button on the radio does not work, something else is up.

GlenSteven · May 18, 2015

Sometimes it works sometimes.. Anyone know how thew head liner comes down? I have the radio face off. Might just pull whole liner out and check wires.