Yes a remote wire is necessary. You must wire the remote wire from the amp to and ignition source of power (a component which turns on when the ignition in the car is engaged.) i.e. the radio. The remote wire signals for the amp to power on.
the rem slot on your amp to the rem trigger on your deck (blue wire on most aftermarket desks)
Hook a switch up to the remote turn on and ground. Before the wiring for the amp.
You only need the remote wire if you have an external amp.
Why bypass amp just get wiring diagram and hook up remote"blue wire" to the remote lead from factory amp. Or unplug amp use a meter and check which wire has power. Then turn off radio and check wire again should have no power with radio off. This will only work if factory radio is still installed. But that wire would be remote wire. Just hook up new radio remote wire to the found wire. Then connect speakers to factory plugs and use the amp.
just hook it up to a wire with power when the key is turned on the same wire that turns on your stereo just change the fuse to your stereo from a 10 amp to a 15 amp
Get a multimeter and find any hot wire going to the stereo when key is on.
remote wire is to control amp, bass coming from subs, and the frequency
if you have aftermarket stereo it is very easy pull the stereo out of the dash and take your rca wires and plug them in to the back of the stereo and then take your blue wire which is remote wire and conect it to the remote wire on the back of the stereo, from there you rum the wires to your amp. ground the amp and hook up the sub to the amp and you are good to go. hope this helps.
Easy way to check were the problem is take a 6" piece of wire. Unhook the remote wire from your amp. Then hookup your 6" piece of wire to amp remote terminal then take other end and connect to the 12+ terminal. If amp powers up the its in the headunit. If amp does not powerup or goes into protect mode the amp is problem.
The remote amp turn on a 2012 Dodge Ram 1500 is the wire that taps on the harness to supply the 12v.
The deck has to be a aftermarket deck. On the wiring harness, you will see a blue wire that says rem. Hook it up there and you should be good
You have to run the powers and grounds for the amp, do not forget to set up the remote wire either. then you will need to connect the amp to the CD player auxillary with the RCA's, then you just wire your sub to the amp.-Shocker