M1009 Fuse Box Issue 30AMP Main Lighting Fuse

[catamountinsp]

Got a problem I can't figure out. I installed LED head lamps over the weekend and now I have no lights (head lights, marker, brake, directional, or tail lights). My first knee jerk reaction was the the LED headlights did something to my lighting circuit; but I believe its possibly my BLK-OUT switches; as I used these to turn on my headlights ILO head light switch (I always leave my headlight switch pulled out (on) and control them by switching the service switch on-off)? Anyone have this issues with these switches going bad; any help is greatly appropriated." I do know how the lighting switches work; so I am good there"

After further review...... My 30 AMP main Lighting fuse positive lead melted before blowing. ONLY this socket appears to be damaged however I can't tell. Truck still runs, just no lights or horn. I discounted the harness from the box and pulled the box from the inside firewall.

Thank you in advance

 

[MarcusOReallyus]

This is a common problem. That circuit is badly overloaded. It's a poor design. Lots of info about it in the "Helpful Threads" sticky.

 

[dstang97]

Wiggle the fuse .