Originally, my van had each battery with a ground wire from the van metal to each negative post. The driver side battery also had the negative cable to the inverter. The monitor requires all the cables from the battery negative to go to the shunt and then an additional cable goes from the shunt to the vehicle ground. Since none of the cables except for the inverter cable would reach to the shunt, I elected to get 2 new battery neg to shunt cables of equal length (in case that helps). I used a piece of the old inverter cable I replaced for the shunt to ground. It was larger than really needed but I had it so all it needed was a new connector for the end.
|Glue backer board to bin|
|Marking location for shunt|
|Mount shunt, drill hole for wire|
|Wiring Plan for the Battery Monitor|
|Chosen location for monitor|
|Exposed door pillar|
|Removed panel above side door|
|Inside cabinet for wire route|
|Removed wire cover|
|Remove screw covers for 3 |
screws in step well
|Weep hole found in step well|
|Monitor wire run up weep hole|
in flex tubing
|Monitor wires connected to shunt|
Wire block on monitor board
It was finally time to wire the cable to the shunt and to the monitor. First was the shunt wiring. The first thing was to remove the fuse from the red battery pos connection. The monitor cable requires 3 wires to go to the shunt and one wire with a fuse on it to go to the positive terminal of one of the batteries. The cable I bought for it had the same color wires and in the correct twisted pair as specified by the Trimetric instructions. They had peeled the outer wire cover back 2 feet which was sufficient to get the red, fused wire to the driver's side positive terminal (encased in a flex tube). That left an extra 2 feet of the other 3 wires (2 black and 1 white) at the shunt where they are connected to the small screws. After making the connections, I folded the excess wires, used a wire tie to hold them, then put them into a flex tube and wire tied that to keep them out of the way.
|Installing the Monitor board|
into the box
|Monitor wire inside cabinet.|
Wire cover hides it
|Panel reinstalled over side door|
Except for re-installing all the pieces I took off to get the wire to it's location. And connecting the negative cables to the negative posts on the batteries and put the fuse back in the red wire fuse holder. Then its time to learn how to use the monitor.
I made a checklist for installing it - here.