The meter is extremely easy to wire. Just connect + to + and - to -. If you want to connect it through a key switch then connect + to switch, switch to battery +, and - to -. Please let me know if you have any other questions I can assist you with. Thanks again.
36V blue digital volt meter. This voltage meter will give you a real time voltage reading from your batteries. You will never have to risk being stranded from your batteries going dead.
Display Color: Blue
Dimensions: 1.6" x 1" x 0.79"
Refresh Rate: 0.5 Second
Design: Waterproof, Dust-Proof, Shock-Proof