The unit comes with everything you need. The shunt connects directly to the negative cable as it comes off the negative terminal. Victron supplies a small cable that connects to the battery positive terminal and then to the shunt. Here is a video from AM Solar.
I don't remember that mine came with that cable either, probably because its required length would vary, depending on shunt placement relative to the battery.
The cable would need to be #4 or #6 battery cable - check your existing battery cable, which I think is #6.
Edit: changed the link to show the 3/8" terminals.
2020 T@B 400 BDL TV 2018 Toyota Tacoma TRD Sport 3.5L 4WD with Firestone air bags. MODS: BMV-712 battery Monitor, MPPT 75/15 Charge Controller, Fantasic Fan PWM control Central Ohio
I wanted my shunt to be just outside the battery box, inside a waterproof box. I needed a flexible battery cable, because wrestling a "normal" cable through that maze was impossible for me. This one is "ultra flexible" and easily made the big bends needed. Comes in different lengths. I used the 2 footer (I think).
Comments
You’ll love the monitor!
https://youtu.be/tV055vmZgvY
2014 S Maxx
2011 Tacoma 4cyl ... edit: 2022 Tacoma 6cyl - oh yeah!
A_Little_T@b'll_Do_Ya
https://www.amazon.com/Spartan-Power-Negative-Inverter-Terminals/dp/B071692GLF?th=1
Edit: changed the link to show the 3/8" terminals.
TV 2018 Toyota Tacoma TRD Sport 3.5L 4WD with Firestone air bags.
MODS: BMV-712 battery Monitor, MPPT 75/15 Charge Controller, Fantasic Fan PWM control
Central Ohio
2013 Tundra TRD 5.7L
Massachusetts
https://tab-rv.vanillacommunity.com/discussion/comment/114398#Comment_114398
PS: I later added another similar black box to hold bus bars & all the wires that eventually had cluttered the battery terminals.
TV: 2005 Toyota Sienna LE (3.3L V6)
RV: 2018 T@B 320S, >100 mods