How to Fix HMMWV Tail Lights & Brake Lights | Military Humvee Wiring Hack

Working on a surplus Humvee electrical system can be a major pain. In this step-by-step video, I’m walking you through how to pull the old tail and brake light housings, clean the military connectors, apply dielectric grease, and install the new taillights properly. I also cover exactly why skipping dielectric grease on these specific military connections is a massive mistake if you want your wiring fixes to actually last. Make sure you hang out until the end - not only am I showing you a crucial wiring shortcut, but I also hit a few snags along the way that made the driver’s side installation a lot harder and more time-consuming than the passenger side. TIMESTAMPS 0:00 - How to replace HMMWV tail and brake light housings 2:38 - How to remove HMMWV taillight protective housing box 5:14 - How to find HMMWV rear taillight mounting bolts 6:35 - HMMWV taillight bolt stuck rusted fix 8:39 - Why cracked HMMWV military connectors cause electrical problems 9:01 - How to remove HMMWV rear taillight support bolts 13:28 - How to disconnect HMMWV military taillight wiring connectors 15:51 - HMMWV taillight wiring problem troubleshooting 17:01 - How to clean corroded military vehicle wiring connectors 17:51 - HMMWV taillight wiring shortcut that saves time 20:30 - Why HMMWV driver side taillight is harder to install 22:06 - HMMWV driver side taillight clearance problem explained 23:13 - How to apply silicone sealant on HMMWV taillight housing 24:20 - How to clean HMMWV military electrical connectors properly 27:38 - How to reinstall HMMWV taillight protective housing 29:15 - HMMWV taillight wiring hack you need to know 31:40 - Why you must use dielectric grease on HMMWV military connectors Subscribe for more tactical military vehicle repair guides, maintenance walkthroughs, and troubleshooting hacks! Drop a comment below: What is the most frustrating issue you’ve run into on your truck so far? Let’s swap some stories! MORE HUMVEE FIXES & TWEAKS Make sure to bookmark and subscribe to the official "HMMWV Tips & Fixes" playlist so you don’t miss the next build update or shortcut:    • HMMWV Tips & Fixes   #HMMWV #Humvee #MilitarySurplus #DieselMechanic #FuelLineFix #DIYRestoration #DavidAragon