4Runner Voltage Booster Fuse for Under $10 to Properly Charge Your AGM Battery.

In this video I will show you how to use an OEM General Motors resistor fuse in a 5th gen 4Runner to up the charging system voltage to 14.4 volts. Factory 4Runner batteries only need 13.7 volts to properly charge and that is why we only see that voltage from our 4Runners without modification. When upgrading to an AGM battery this can cause issues as AGM batteries require about 14.4 volts to properly charge and maintain capacity. The alternator in a 4Runner is capable of that higher voltage but is limited by the voltage regulator as from the factory there is no need for anything more than 13.7 volts. By replacing the standard fuse on the alternator signal wire with a resistor fuse we essentially trick the computer into allowing more voltage through. There are several aftermarket companies making voltage booster fuses that do the same thing by installing a resistor inline but most of those items are quite expensive. An OEM part from General Motors is available to do the exact same thing. For less than $10 and a few minutes with a file on plastic you can achieve the same overboost charging. As tested and shown in the video. Factory charging was 13.6 volts at idle and about 13.8 when driving. After installing the voltage booster fuse the idle charging was between 14.1 and 14.4 volts. When the battery needed a charge it charges at about 14.6 volts. Overall this mod was a success and provides the necessary charging for my AGM battery. Some of the links below are Amazon affiliate links that help us continue to make these videos. General Motors, DIODE, 12135037 = https://amzn.to/39cuXJS General Motors, DIODE, 12135037 5-pack = https://amzn.to/2THcIpt 120 Pieces - EPAuto Assorted Car Truck Mini Blade Fuse Set = https://amzn.to/32EHN13 ********* Be sure to follow us on Instagram:   / twistedjake503   Check out our website for more: https://www.twisted4runner.com/ ************ Things we use (Some Amazon links are affiliate links that help us continue to make videos.) *************** Prinsu Rack: https://prinsudesignstudio.com/ XBull Traction Boards: https://amzn.to/2VvMSr9 Plano 42″ Case on Rack: https://amzn.to/2WbKa7e Plano 1719-00 68 Quart Tote in Back: https://amzn.to/2Iv2bb5 FuelPaX/Rotopax 4.5 Gallon Fuel Container: https://amzn.to/2l8eYZ8 Fuelpax self venting spout: https://amzn.to/35fUiQs Bond LH015 Mini D Handle Shovel: https://amzn.to/2jGkTUR Extreme LED 38″ X6 Light Bar: https://extremeledlightbars.com/ Xenon Depot HID Low Beam: https://www.xenondepot.com/ Xenon Depot Xtreme LED High Beam: https://www.xenondepot.com/ Scrubblade Wipers (Discount Code): https://bit.ly/2MyZ7jn Baja Designs Squadron Fogs: https://amzn.to/2LdGHUD Slims Depot 6X Switch Panel and Fuse/Relay box: https://bit.ly/3732hS7 S-Tech 5th Gen 4Runner Mounting Bracket: https://stechswitch.com/product/mount... Heavy Duty Wire Lugs: https://amzn.to/2PN7BDp Lug Cable Crimping Tool: https://amzn.to/2Q860a6 Heat Shrink Tubing: https://amzn.to/2s1lLaZ LittleFuse Megafuse Single Terminal Fuse Holder: https://amzn.to/2Q916JN LittleFuse 100 AMP Slow Blow Fuse: https://amzn.to/36ZKyL4 Bussman 50 AMP Resettable Circuit Breaker: https://amzn.to/2POwBKu Gorilla Heavy Duty Double Sided Tape: https://amzn.to/2SheD4E Velcro to mount the Switch Panel: https://amzn.to/35T1e7a Gaia GPS (Discount Code): https://www.gaiagps.com/discounts/#_r... Rago Fabrication Modular Window Panels: https://www.ragofabrication.com/ 67 Designs Cell Phone Mount: https://www.67d.com/ Ram Mount Tablet Mount: https://amzn.to/2LgDR1p Window Tint:   / wrapcopdx   Amsoil Synthetics: http://www.northwestsynthetics.com/ NOCO GB40 Jump Starter: https://amzn.to/2nBvIWN Carista Adapter and App: https://caristaapp.com/ Baofeng/Luiton HT HAM Radio: https://amzn.to/2KydoKK Luiton Extended Antenna: https://amzn.to/2IB2ocK Retevis HAM Programming Cable: https://amzn.to/2XEdHr2 Hood Antenna Mount NMO: https://amzn.to/2EUQmKr Tram 150MHz-162MHz Pre Tuned NMO Antenna: https://amzn.to/2Wsr1xp Handheld Antenna Cable Adapter: https://amzn.to/2F0FgUd USB Charging Port for Dash: https://amzn.to/2MxH2Cf Salex Console Organizer: https://amzn.to/2Fcs6Un Salex Center Console Tray Organizer: https://amzn.to/2MCgBve Nox Lux Emblem Overlay Kit: https://amzn.to/2YdZT77 Toyota Specific Oil Filter Wrench: https://amzn.to/2YWZSbe Plastic Trim Tool Kit: https://amzn.to/2HjgUGj Turtle Wax Ice Seal and Shine: https://amzn.to/2HfvKOg Garden Hose Foam Gun: https://amzn.to/2TPpN1F VViViD Matte Black Vinyl: https://amzn.to/2T1eMts 3M Knifeless Tape: https://amzn.to/2SYvSrT Wax and Grease Remover: https://amzn.to/2QTiiTX Chemical Guys Citrus Wash and Shine: https://amzn.to/35wcdCr Turtle Wax ICE Seal and Shine: https://amzn.to/2QPFKl6