Dual Battery Design & Install; Modification for Any Car or Truck, Shown on 2004 to 2008 F-150 Trucks
Learn how I install two Group 34 Batteries into the engine compartment in stock OEM battery location by removing the stock Group 65 Battery and Battery Tray. I make my own Battery Tray and new Battery Hold-downs. I use military style Battery Terminals and Heavy Duty Lugs. I use a Battery Isolation Solenoid controlled by an Ignition Key Powered Relay so that when the key is “ON” the Dual Batteries are connected in parallel. In addition to the Ignition Key Powered Relay, I also have manual switch in the circuit to allow the driver to keep the Dual Batteries isolated, if desired. I have two Voltage Gauges (one for each Battery) to indicate individual battery voltage that are turned “ON” and “OFF” by the truck’s stay-alive current. The Voltage Gauges are “ON” with the vehicle radio and power windows, which turn “ON” with the vehicle Ignition Key and remain on for a timed 20 minutes (or when a door is opened).
Recommended Tools:
Wrenches, as required.
See my videos for soldering terminals to wires for Solder Tools
Gloves
Rear Dome Map Light Assy Mod for ’04 thru ’08 F-150 Trucks - -
Front Dome Map Light Assembly Modification for more light on the floor of 2005 Ford F-150 (’04 thru ’08 Ford F-150 Trucks) -
How to make a better connection with a cheap crimp connector (either Female Disconnector or Ring Terminal).- -
Why use a Relay and 3 Ways to Connect a Relay - -
Car Maintenance Log Book (Why you need to keep one) - -
Three Wire Splices that take care of 98% of All Automotive Electrical Wiring Splices.
Alternator and Drive Belt Replacement - 2004 thru 2008 F-150 5.4 L
Power Steering System Rebuild (Removal-Cleaning-Installation) - 2004 thru 2008 F-150 5.4 L
Alternator Ground Cable Addition and Modification - 2004 thru 2008 F-150 5.4 L
Tuning with Superchips FlashPaq Performance Tuner
Clean and Service Vehicle Battery for Long Life and the Best Connection; Any Car or Light Truck
Charging & Starting Systems Troubleshooting: Engine Fails to Crank or Cranks Slow, May or Not Click
Disclaimer: The information, demonstration and any content contained in this video is for informational purposes only. Due to factors beyond the control of the author, I cannot guarantee against improper use or unauthorized modifications of this information. The author assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. The author recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of the author, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not the author. The links on this video to products are for informational purposes only and in no way are an endorsement of the safety or effectiveness of the particular product. Therefore, viewer agrees to release, waive, and discharge the author or anyone affiliated with the author or video, from any and all liability, claims, demands, actions, and causes of action whatsoever arising out of or related to any loss, damage, or injury, including death, that may be sustained by the viewer, or to any property belonging to viewer, regardless of whether the loss is linked to the use of the contents of this video, or otherwise and regardless of whether such liability arises in tort, contract, strict liability, or otherwise, to the fullest extent allowed by law.