Unless you install it so that the "switch" is perpendicular to your line of sight, it will be impossible to read when both connectors are used. I haven't seen any mention of it either, but with nothing connected I get battery readings. But when I plug in the device to charge I get the approximate amperage of the charger. I am no longer getting battery voltage.
A/C Dash Button Repair Kit: 5PCS TIHOOD Stickers For Faded Auto Climate Control Decals Replacement With Perfect Adhesive Fit
10 Review
HOTSYSTEM Single Hole Dash Dashboard Gauge Mount Pod For Car Temperature, Voltage, Air/Fuel Ratio, Boost, Exhaust & More - Universal 2 Inches 52Mm Size With Black Cover
11 Review
Upgrade Your Dashboard With HOTSYSTEM Universal 2Inches 52Mm Dual Hole A-Pillar Gauge Meter Mount For Car Auto
12 Review
Universal 52Mm Single Hole A-Pillar Gauge Meter Mount Pod Holder With Black Cover For Car Auto By HOTSYSTEM
10 Review
Tsumbay Car Backseat Organizer - PU Leather With Tablet Holder, Foldable Table Tray, And 9 Storage Pockets
33 Review
Transponder "T-Pass" TRP-4010 AVTODOR TOLL ROADS, black
46 Review
Gray Multi-Functional Portable Steering Wheel Tray For Car Laptop And Food - Vehicle Seat Mount Table For Notebook, Eating, And Working On The Go
43 Review
2Buyshop 2 Pack Car Tissue Holder - PU Leather Napkin Box For Sun Visor & Backseat - Black
28 Review