Painless Wirings 250 amp dual battery controller includes a three position switch to control the second battery through the operation of the solenoid. Switch position one isolates the second battery. Position two connects the battery while the ignition is on. Position three connects the second battery at all times.This Kit is recommended for use with vehicles that are exposed to the elements.
Some Drilling May be Required to Mount Switch
In Cab Switch
Fuse with Holder