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Re: 4020 24 volt system dash lights

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JD Seller

01-02-2013 07:12:25

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I would bet that you have the wrong dash harness. They where 6 or 7 different ones used originally. I think JD has substituted them down to three. So you will need to get a good wiring diagram and make yours correct.

I would bet that Tim is correct in that you have two grounds going to the dash lights.

Also make sure you have the correct ground/positive at the breakers on the back of the dash door. If you have them hooked up wrong they willmake the dash and lights not work correctly.

It makes it easier If you think of the system as being two separate 12 volt systems. One being negative ground and the other positive ground. Nothing on the whole setup sees 24 volt other than the starter and generator.

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Tim S

01-02-2013 07:30:33

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 Re: 4020 24 volt system dash lights in reply to JD Seller, 01-02-2013 07:12:25  
Yes jdseller that is a good way of saying it, and I"ll add that the system will need to continue seeing 2 12 volt feeds only now they will both be neg ground, so battery A&B switch post will both be positive when tested . this is the same on the new Gen switches too, they have 2 12 volt feeds to spread the power load, if only 1 has power only about half the stuff will work... If you tie the Blue and Brown wires together down at the starter to the 12 volt terminal it will take the feeds to Battery A&B at the switch, and this would be a good place for a circuit breaker if you don"t already have 2 from the old 24 volt system, those are good and also pricy, so save them...

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