Originally Posted by Denver
I really do see both sides of this. On the one hand lets say you get pulled over by a guy who is a real hole (you don't know this yet) and he asks you about firearms. In the effort to just be low key you could just say "I do, and they are all legal" you still do not have to consent to search if he asks.
If you admit to having weapons, then you cannot deny him his right to conduct an "e-check" pursuant to PC 12031e to verify that they are empty.
This puts you in the unfortunate position of having the vehicle open. If the vehicle is open and unlocked, then all contents become "plain sight" and subject to search without permission.
The only way around that would be the difficult procedure of getting out of your vehicle and locking the door, then moving to the trunk/tailgate, removing the gun cases yourself, placing them in the custody of the officer, and immediately re-locking the vehicle to prevent further search without consent.