[tentcamper]

As mentioned above the 2 6 v battires are like a 12 v in two sections.

Position the two batteries, looking at it from the front with the left battey with the negative post to the left. Put the second battery in the same way to the right. Run a heavy jumper from the left battery pos post to the Neg post on the right battery. Now if you use a meter from the left battery neg post to the right battery pos post you will have 12.x volts "a 12v battery".

First fine the wires coming from the TM. There should be a white and a black fused wire. The TM uses house hold wiring color code "Black Hot, white nature). you can put the white wire on the left battery neg post and the black wire on the right battery pos post. If there is a wire that go's to the frame of the trailer it should also go to the left battery neg post.

Now any additional wire you will need to figure out if they should go to negative or positive post. (neg post is the neg post on the left battery and positive post is the positive post on the right battery)

For these additional wires I leave this determination to you, to determine which post they should go to. Some wires use a different color coding such as Red pos and black neg, or any color they decided to use.