Fairfield County, Ohio, USA | Sigh. So incredibly frustrated.
We did order the 7-pin connector from Deere, p/n AR78052. I got the number from here on AgTalk, and the dealer confirmed it would do what we were looking for. We started installing it yesterday; spent a couple of hours on it. But then I realized that the socket itself wasn't included in the kit, and then I realized that it didn't have nearly enough wires for what the socket should include. The way it looks to me, we need to buy RE17282 as well, which I did not understand at the time we bought the first kit.
I'm also getting decreasingly confident that this is actually going to work. Kit AR78052 includes a statement "IMPORTANT: The combined current of No 4 and No 7 must not exceed 20 amps.", which is less than the 25A rating of the wash pump. The kit had us install a 30A relay in the circuit breaker panel, and the wires for both No 4 and No 7 connect to it (through a 20A relay triggered by key switch). From there, it runs through a grommet, under the hood to the RH side, down under the cab, and to the back of the tractor. But the wire is approximately twice as long as it needs to be, because there is a patch cable where you could install a switch, if you want.... which is located at the back of the tractor, and separately runs up to the RH battery box riser panel. I'm beyond perplexed.
On top of that, the 4440 tech manual TM1182 has a diagram of the 7-pin connector on page 240-35-4, and it indicates that pin 4 is 20A auxiliary, and pin 7 is 10A auxiliary.
I don't understand why they would have put pins 7 and 4 on a 24A relay, with a 30A circuit breaker, and limited them to 20A total. Is it just because of power loss due to wire length?
I regret having not just bought some wire and doing this in a less-polished but much easier way.
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Which relay, switch, connectors, etc to connect pull-type sprayer to tractor power
