So I have finally completed wiring a secondary fuse block to run extra accessories for roadside assistance.

 

I had a hard time finally getting my power supply inside the vehicle but once I got that, the rest came pretty easy. I put my fuse block on top of the XM receiver so I can have it out of sight, but also accessible to change fuses if needed. Currently I have a circuit for a 12v plug behind my rear view mirror for my GPS which is set to a toggle switch. I have another 12v plug in between my driver seat and the panel covering the seat belt strap. This is also connected to a toggle and it is used to power the mini LED bar on top. I have a 12v air compresser hard wired in. I made the plug that is under the radio, constant out instead of alternating with the key. And Last I added a control box for LED strobes to make me more visible on the side of the road.



I started this thread because it lacked so much information I was looking for when I started this project. I have put 10k miles on this in 4 months and it has been ripped apart inside for 9k miles. So I can see if you guys have any questions in case you considered adding additional lines to your OS. Hope you enjoy!

 

This is how it turned out.

 

These are the last few of the finished product. Hope to hear what you think.

 

Nice, I would love to have that job!

 

@Randy,
Hey great work on the electrical mods!

Two things I would suggest -
1. Consider getting a larger battery. The additional loads to your electric system will strain your stock (expensive) alternator**.
2. FYI - under Texas law, I believe you can't have (flashing) color lights other than YELLOW on service vehicles. You Don't want to get $250-$300 citation for helping stranded drivers...

**Our alternators have Re-Gen circuitry and costs a cool $1,500 each. Just a friendly heads up.