OBC 6 pin vs 3 pin

keepinitreal538 · 12-11-2021, 03:24 PM

Hello, I was searching the threads but couldn't find anything on the topic. I have a OBC that is the 6 pin and my wiring harness and controller are for the 3 pin... is there a way to convert the 6 pin to a 3 pin? or do i need to buy 3 pin? I really want to do this as cheap as possible. I know i could buy a new charger and bypass it completely but i know the OBC works its just a 6 pin and i need a 3. any help would be great Thanks you.

Fairtax4me · 12-11-2021, 04:08 PM

Yes it can work.
Red wire is 48v constant in from the solenoid + side (same as battery pack positive). You need this for the OBC to function. The red wire in your 3 pin harness harness should already be in the proper place, but verify that it goes to the solenoid + post where the B+ cable is connected. Put a 10 amp fuse on this wire if one is not present.
Brown wire goes to the battery warning lamp. This can be connected to the existing brown wire in the harness.
The yellow wire from your 3 pin plug needs to go to B- post on the controller.

In the 6 pin OBC harness.
White wire would normally be 48V switch from the Tow Run switch, but you do not have that, and don't need one. This should not be necessary for the OBC to work, but it does serve as a wake-up function of sorts. Leave it disconnected. IF for some reason the OBC doesn't work, then connect this to the Red wire.
Blue, Yellow, and Green wires are not needed.

Grey wire goes to the Charge receptacle yellow fuse holder.
Connect long black wire to charge receptacle negative post.
Short black wire to B- terminal on the controller.

12-11-2021, 03:24 PM	#1
keepinitreal538 Not Yet Wild Join Date: May 2020 Posts: 47	OBC 6 pin vs 3 pin Hello, I was searching the threads but couldn't find anything on the topic. I have a OBC that is the 6 pin and my wiring harness and controller are for the 3 pin... is there a way to convert the 6 pin to a 3 pin? or do i need to buy 3 pin? I really want to do this as cheap as possible. I know i could buy a new charger and bypass it completely but i know the OBC works its just a 6 pin and i need a 3. any help would be great Thanks you.

12-11-2021, 04:08 PM	#2
Fairtax4me Bonafide Nincompoop Join Date: Dec 2015 Location: Charlottesburg Va Posts: 8,987	Re: OBC 6 pin vs 3 pin Yes it can work. Red wire is 48v constant in from the solenoid + side (same as battery pack positive). You need this for the OBC to function. The red wire in your 3 pin harness harness should already be in the proper place, but verify that it goes to the solenoid + post where the B+ cable is connected. Put a 10 amp fuse on this wire if one is not present. Brown wire goes to the battery warning lamp. This can be connected to the existing brown wire in the harness. The yellow wire from your 3 pin plug needs to go to B- post on the controller. In the 6 pin OBC harness. White wire would normally be 48V switch from the Tow Run switch, but you do not have that, and don't need one. This should not be necessary for the OBC to work, but it does serve as a wake-up function of sorts. Leave it disconnected. IF for some reason the OBC doesn't work, then connect this to the Red wire. Blue, Yellow, and Green wires are not needed. Grey wire goes to the Charge receptacle yellow fuse holder. Connect long black wire to charge receptacle negative post. Short black wire to B- terminal on the controller.

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