Amp install ????

You don't own the truck. Don't modify it. This is a bad idea.

 

Sounds like a perfect way to be looking for a new job. Does the company have an agreement with you? That keeps you from adding this item or items?
I know if it were my truck. And a driver wired up stuff without approval. That driver would be fired. These newer trucks, lots can be screwed up. Just wiring up something. And today's stereo's do a great job. If it does not have enough power. You may need new hearing aids.

 

These new trucks send multiple info for the computers to run the truck on the same wire. It's call Multiplex wiring and it takes 5 or 6 computers to run the truck down the road. I wouldn't cut into the wires unless the company ok with it.

 

Get a power drive 300 w invter and use your 12v outlet that has the best fuse and make due with home speakers.

Had enough bass to turn heads at stores.