i have a 1991 f250 that i want to run a duel battery setup in. reason being is that i plow and when im plowing i have my plow lights , marker lights , strobe lights , wipers , heater and sometimes my radio on and when i go to reposition my plow at all it drains my battery down to nothing, so much that one time it actually killed the truck and i needed a jump start. the battery i have in there now is almost new but i wanna add another just to give it the extra power i need to get the job done and not get stuck. could you please tell me EXACTLY what i will need and how i should go about wiring it . thank you in advance for any information i recieve.

 

Use a battery isolator and check with an RV dealer for parts and wiring info. Do not go cheap and wire the batteries together or thru a relay (solenoid).