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Old 06-01-2022, 12:23 PM   #21
tech740
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Originally Posted by flybouy View Post
From your description if you connect the brake wire with the pin removed then yes you will get a spark. The pin operates a switch by holding the switch open ( disconnected). So with the pin out you have a completed circuit actuating the brakes. As for the slideout someone with more knowledge will have to answer that. If it has a control board that communicates with other devices it may have a parasitic drain but I don't know.

That’s what I was thinking. I am trying to find where the drain is at. Seems odd to me that a 75amp converter won’t charge the batteries and keep up with the drain. Shouldn’t I see 13 volts when it is just sitting plugged in?
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Old 06-01-2022, 02:00 PM   #22
chuckster57
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At this point have you used a DC amp clamp on the battery lead? Unplugged from shore power will tell you if you have any draw. Then you can start disconnecting circuits to narrow it down.
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Old 06-02-2022, 05:37 AM   #23
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I found 4 of them. 3 in the battery compartment, and one in the hydraulic compartment. I have 13.6 at the back of the converter. With the wire from the converter to the battery switch unhooked I had 13.1. should be straight from the converter to the end of that wire. Now all hooked back up and I am at 12.6V. It seems like there should not be that much voltage drop. Are there more grounds or am I fighting a losing battle trying for full voltage? Also I am noticing that the fan doesn't run on the converter. Its a WFCO 9865.
6 AWG battery cable will loose approximately 2 volts in 30 feet of wire.. and that 30 feet is total of both directions.. Say you have a run of 30 feet for the positive cable and say 10 feet from converter to chassis ground of 10 feet... that is a total run of 40 feet...
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Old 06-02-2022, 08:38 AM   #24
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I do have a DC amp clamp and will look into that on my next day off. I understand the voltage drop but with the disconnect off I am getting 13.6-13.9V. That is about 25-30 feet from the converter. It seems odd that the 2 feet from the disconnect to the bus bar or batteries would cause the loss.
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