Combines possible wiring problems on a R50

+Mine was doing that right after I had cleaned and filled batteries. The cab circuit would go out. It acted like a breaker was tripping and resetting and tripping again. I checked batteries and found them to be in very poor condition,dead cells,etc. So I hope the bad batts created the problem. I have not put new batts back in yet to see if that corrects problem. I only add this to conversation to see if anyone can lend support to my theory. Thanks,and soory I am not of greater help. Nick

Well that could have been it last night as the little monsters_nieceandnephew were playing in the cab and i had to put the charger on. However, I had this same problem this summer cutting wheat. Happened in the spring moving combine around and then one day when i was starting harvest. These are new batteries last fall.

I also had this problem with my combine. The main power wires going in the cab to the fuse panel were not making good connection all of the time. I took all of those connections apart cleaned them. After that I put a little electrical grease on the connection to keep them from corroding again and have not had a problem since. Good luck.

Right inside the fuse panel on the RH side there is a relay, turn the key on and off and hear it 'clunk'. The next time nothing works take a 10 ga jumper wire and connect the TWO BIG terminals together, if it arcs and everything works you have a relay (solinoid) going bad. IF not then check to see if one of the SMAll teminals is reading 12v ( one is ground) if not it is the key switch. 71347910 is the relay. IF not this then there are a couple of curcuit breakers that might be at fault but I doubt it. The other possibility is as someone else stated a connection that is not plugged in and making contact until it arcs itself together. This is tougher and will require detailed following of the wiring curcuit in the back of the op man. Find what is not working, look for the power source wire and start back tracking. Good luck, let us know what you find,..

It's a good idea to pull all the electrical plugs on an end of season basis. Blow them out with air and replug. Chaff dust gets into the plugs, attracts moisture and the acids from the dust then corrodes the contacts. Cheers!

AGCO really needs to find a better quality supplier of those relays. The past year or so, we had been having problems with low voltage readings, especially at night using lights, AC, etc. This summer, it got so bad that the three speed fan switch was getting hot to the touch and we were having the separator clutch kicking out (happened twice). We replaced that relay and all problems disappeared. I hope we didn't damage the clutches running too low of voltage! Anyhow, there seems to be a lot of talk on here of electrical problems being traced back to those relays. BTW, the buggers are a bear to replace on the Series II's! At least on the older combines they were where you could get at them easier. Tom langan

Not the batts, although they were bad. It did the same thing after installing new ones. Tested the console relay(rapped it with screwdriver) and found it to be shorting in and out. Put a new one in(n71347910,console relay),it works.