Kenworth W9 trailer brake electrical fuse is located on the outside firewall.

1999 Kenworth W900L trailer brake electrical fuse wire harness is located underneath the hood on the firewall. You are going to need a 30 AMP fuse. ‪@americantrucks‬ ‪@BoneheadTruckers‬ #shortvideo ‪@BoneheadTruckers‬ ‪@TruckingWithTay‬ ‪@TruckingandLife‬ ‪@GasMonkeyGarage‬

[@TheOriginalSpawn]

Good Video Quil 🔥💯👌🏽

[@DIYTRUCKERJAY]

Thanks 💯

[@rogeriogluz]

Great tip...

[@jorgemarrero4275]

❤thanks

[@davidgrant2984]

Thank you thank you thank you

[@JQuilATL]

Your welcome @davidgrant2984

[@loudmouthshnook1]

Thank you so much for this video. This fuse was exactly what was wrong with my truck today. I was almost going to run a jumper. So glad you made this.

[@bruhbedrivin]

I wish i would have seen/known this 4 hrs ago😂. Dot gave an inspection earlier and wrote me up for no trailer brake lights. Same truck 1999 w900 with a 3406e like yours. Changed the fuse trailer brake lights work problem solved 👌🏾. I appreciate you 🙏🏾 🙌🏻

[@pepmuzic7483]

Thank you bruh!!!

[@turnersonslogistics5416]

My trailer break lights not working but I don’t see that fuse u set the hood

[@enriquecorona7176]

Tanx

[@DIYTRUCKERJAY]

Your welcome

[@johndoer903]

My back up light wont work is there a fuse outside under the hood? same model but with cummins n14 celect plus

[@DIYTRUCKERJAY]

Check out my video uploaded about replacing the back up switch on top of your transmission