Best source for hardwired 12V in Hybrid 22 Tundra?

Hi all -
I'm planning to install a ham radio in my 22 CrewMax Hybrid. I think I've figured out the cable routing using the existing grommet/hole in the firewall. Given the "traditional" 12V battery is under the rear seat, and all, what is the best/safest source for me to power the radio's head unit? Typically will be pulling under 3A as I'm mostly listening, but if I transmit could be more like 10A.
Thanks!

 

You’ll want to pull straight from the battery if possible to minimize potential signal interference. Hook it straight to the 12v battery under the seat assuming it has an inline fuse.

 

This

 

Always make sure the fuse is as close as possible to the + on battery...

 

Thanks all! I found some Youtube videos that should help me do the cable routing, and having the battery in the back seat makes this pretty straightforward (hopefully!).

 

I’m curious what others are doing for winches and compressors. Are they running through into the cab then to battery?

 

Yep, LOOONGG heavy gauge winch cables from the front to the driver seat grommets, then routed to the battery. Wondering if I should run a fuse/ some sort of switch to keep it from frying incase something goes wrong.

 

Any fuse won’t handle the power draw from a winch. IIRC the peak power output from a winch is around 500A and around 300A continuous. I ran a Blue Sea battery override switch (rated for the amperage load) on my last truck as a safety. I have a close buddy who had a runaway winch- solenoid shorted out while winching and wouldn’t stop until someone hacked the battery cables to stop it. Definitely a freak incident and not a normal occurance but it’s the reason why I only buy 100% water sealed and made in US winches