Forum Discussion
KD4UPL
Dec 02, 2022Explorer
I'd put the controller in the truck, that way you only need one instead of in each trailer. I'd connect the output of the controller to the charge line going to the 7 pin on the truck. If you're not towing a trailer it will keep your truck battery charged up. If you are towing a trailer it will keep your trailer battery charged up.
To make this work your charge line has to be hot all the time like on a GM truck, not switched off with the ignition like on a Ford. SOME charge controllers can be damaged if the panels are hooked up with no batteries.
Also, you will need to have very similar batteries in all your trailers and truck or you will have to be changing the absorb and float settings on the controller for each trailer. If they are all flooded or all AGM of similar brand it should work fine.
To make this work your charge line has to be hot all the time like on a GM truck, not switched off with the ignition like on a Ford. SOME charge controllers can be damaged if the panels are hooked up with no batteries.
Also, you will need to have very similar batteries in all your trailers and truck or you will have to be changing the absorb and float settings on the controller for each trailer. If they are all flooded or all AGM of similar brand it should work fine.
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