radio on 3020

Connect it directly to the right side battery, positive to positive and negative to negative, that's the easiest. If you just have the positive wire from the radio, and if your fuse wire on the left battery is good, you can hook it to the positive post on the right battery.
 
i'm grounded to the fender right now and hooking direct to left bat blows radio fuse, so i need to run hot and ground off battery right?
 
Do you have a fuse wire on the left battery that goes from the positive post to the transmission case ? If you do, and it's working, (it's working if your oil light and fuel gauge are working ), then you can run the positive wire from the radio to the positive post on the RIGHT battery.
 
do not have that, and fuel gauge and oil light dont work. BUT there is a fuse holder and wire laying on the side of the case. wonder if that is what it's for!!!
 
The fuse wire on the left battery is only 12 volt ground on a 24 volt system and is needed to ground the oil light and fuel gauge. Also without that fuse wire, your lights won't last very long, once 24 volts hits the bulbs.
 
That fuse wire uses a 20 amp slow blow fuse, a regular 20 amp fuse won't last long. If you try to connect that fuse to the battery and it blows right away, you more than likely have a starter problem, even though your starter may seem to be working fine. 24 volt systems work fine when they're working, you might want to think about converting it to 12 volt. If all you really need is the radio, I'd hook it directly to the left battery.
 
You could plug the radio supply into the trailer light plug-in(parts key #25) on rear of tractor or to either one of the 12 V batteries +to+ & -to -. Right or left battery makes no difference on the minute draw of a radio but won't work correctly with a large amp draw.
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so when i hook to the + on the right hand battery and the - to the frame, i'm feeding 24v aint i. i have to have a seperate wire for + and - from the radio to the battery
 
What Deere had for a 24V system was a little confusing and unlike other 24V systems. It was actually two 12V systems. One positive ground battery (LH) one negative ground battery (RH). It was a positive ground system. The little fused wire was to split the systems. Some lights worked off one battery while others worked off the other balancing the batteries. That fusable wire was originally just a plain small guage wire called a fusable link. Was designed to burn in two when a short occurred. They finally decided a fuse would be easier to replace.
Since the radio is negative ground you use the RH battery like grn wrncher says.
Maybe this was more info than you wanted? The long way around the barn.
 

D-
You being a new member probably missed reading the previous heated discussions where it was stated that JD's 24 V system is not two 12 V systems combined with "No ground" required for head lamps. You need to read the archives of this forum. John T I think I hear your phone ringing!!!!!! :wink:
 
Who won that heated discussion?
You have an ignition switch with a positive post and a negative post, a light switch with a positive and a negative post.
Now do you believe the lights are 24V bulbs. No they are 12V. The inner ones run off of one battery while the outer ones are off the other battery. The same way with the 12V idiot lights. As stated above the oil light and fuel guage won't work without the ground wire connected. The head lights don't work properly either. If the generator was a true 24V generator it would need only two posts. It has three since it charges two separate 12V systems. A true 24V starter would have only one post just as a 6V or a 12V starter. A true 24V system would require resistors to operate 12V lights. There are none except the one on the light switch for dimming one set of headlights.
I guess I won't be calling John T. Maybe that ringing is only in your ears :)
 

D-
WHOA!!!!!!!! John T or I need no explanation of JD's 24 volt systems. I spent too many years in a JD dealers service dept explaining to technicians about the 24 V systems. Just research the archives for some interesting reading and you will understand my previous statement.

FYI the statement I made about John T's phone ringing was intended as sort of a joke to him.
 
What? Huh?!? Whaaaaaat?

Go out and buy a pair of hearing protection with a built-in radio. You'll get to listen to your favorite tunes AND protect your hearing.


....and you can bring along two girls (one on each fender) instead of just one!
 

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