Thought this might be https://www.ebay.com/itm/bayite-DC-5-120V-400A-Mini-Digital-Current-Voltage-Amp-Meter-Gauge-with-Hall/202473558490?epid=10023311252&hash=item2f245d51da:g:alQAAOSwxxVbx7NA:rk:2:pf:0of interest...bayite DC 5-120V 400A Mini Digital Current Voltage Amp Meter Gauge with Hall Effect PickupUS $26.99

I don't know but that wire they show for the current carrying wire. at 400 amps that puppy is a flash bulb.

400 Amp flash bulb? No problem it is only 198 Amp!

its just a re-used picture, from one of the earlier smaller amp versionsi have several of the 100amp versionmonitor charge to the batteries and inverter load

It's faster to install than a shunt and less exposed to shorts and longs.Heck I may even order one for the toad. It would have screamed PROBLEM! when the starter motor slowly was dying. I need a titanic capacitor to smuuuuuuuuuth out the hungarian movie actress MoPar ECU voltage regulator readings.