all the positives will go to fuse panel. The hot wire will come from battery to fuse panel. All the negatives will need to be joined together at the negative post of battery.
It is the radio ignition fuse. Used on the power signal wire for the radio.
Where is the wire that feeds instrument panel fuse
That varies by the installer. Some might wire it into an unused slot in the fuse panel, or they might piggyback it off an existing one (which, personally, I do not recommend). My vehicle isn't a police vehicle, but I have additional lighting on it, and I bought a Blue Sea fuse panel, and basically installed an additional fuse panel.
More than likely has 2 fuses. One in the fuse panel and another inline fuse somewhere between the fuse panel and the radio on the red power wire.
It comes from the hot wire harness from the battery through the fuse panel. It will have a fuse in the main fuse block.
red
A wire connects to a fuse box by being inserted into a terminal or connector within the fuse box, where it is either screwed or clipped into place, ensuring a secure electrical connection. The wire typically connects to a fuse or circuit breaker to protect the electrical system.
If the plastic box has a ground wire attached to the GFCI and the ground at the fuse panel, you do not need to ground the box itself. As long as the ground wire is connected to the GFCI and the fuse panel, the box will be effectively grounded. Just ensure that all connections are secure and properly fastened.
Check the fuse in the fuse panel. There should be a fuse for the radio, or you have a llose wire.
trace back the + wire from the alternator to the fuse panel in front of the battery
There should be a fuse in the fuse panel that controls the power outlet. Check the fuse first, then look for a loose wire connection.
the inline fuse for the ignition requires remove the bezel panel and the gauge panel from dash. trace the red wire up and to the top rear right of the dash you'll find a lump in the wire.