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| There is an install kit for the Spra-Coupe 4640, the harness is PN 61991-00. Some Spra-Coupe models are wired in a reverse polarity configuration, which this harness does not support. You will want to take a look at your boom switches and see if in fact they are reverse polarity. It is possible to wire in a series of relays in order to simulate the reverse polarity of the original system. The only drawback to this is even with the tidiest wiring job there ends up being a lot of extra wiring under the console. Trimbles solution will be much cleaner, but we had to make it work for our customer so he could spray his potatoes.
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Any Ez-boom users
