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Ok the easy answer here is probably to just get a negative ground controller but....
I was looking at this Grape Solar controllar
[ame]https://www.amazon.com/Grape-Solar-GS-PWM-40BT-Controller-Monitoring/dp/B01FFNNUSK[/ame]
I see in the manual that it is a positive ground. Would this matter if not using the load connections and simply putting all the load from the controller to the batteries? This is what Renogy has to say about a very similar controller they sell....
" You can still use a positive ground controller in a negative ground system as long as you do not use the load terminals on that controller. All your loads will need to be connected to your battery bank."
I was looking at this Grape Solar controllar
[ame]https://www.amazon.com/Grape-Solar-GS-PWM-40BT-Controller-Monitoring/dp/B01FFNNUSK[/ame]
I see in the manual that it is a positive ground. Would this matter if not using the load connections and simply putting all the load from the controller to the batteries? This is what Renogy has to say about a very similar controller they sell....
" You can still use a positive ground controller in a negative ground system as long as you do not use the load terminals on that controller. All your loads will need to be connected to your battery bank."