Everything you need to get started!
12v Deep Cycle Marine Battery
100 amp hours 860 cranking amps. Purchase from department store.
4 Gauge Battery Cable
This is to run between main batteries. Total length depends on vehicle application. Purchase from department store or amazon (red & black cable)
200 amp battery isolator. This is device will charge both batteries when the vehicle is running, while only allowing power to be drawn from the secondary battery to power the sign.
Fuse Splitter & wire
Select a fuse from the box that has power with the ignition switch. Use 14-16g wire to connect from fuse splitter to power the isolator. This will give power to the isolator when the vehicle turns on. Use 10-12g wire to ground isolator to metal frame of vehicle. Purchase from amazon or department store
Fuse holders should be inserted in the main power lines between each battery and the isolator as safety measure. Purchase from amazon or department store
Fuses for the fuse holders. Purchase from amazon or department store
Power Plug (included)
Heavy duty twist lock plugs attached to 10/2 gauge wire. Crimp battery terminals to the wire (if necessary) and tighten to battery posts.
These are the main components of the external battery system. There is minimal mechanical skill needed to create this system. It is easier than installing a basic stereo system.
For links to purchase everything listed above, click the link below and provide us an email to send it to, we will respond ASAP.