Wiring Schematic for JL Audio 500/ m1v2, I have a flashing green without remote on.

check your fuse on the battery and check the fuse on the amp or it might b loose connection of power line and the remote wire(the blue wire

Sounds like your remote wire is loose or bad. I would thoroughly check that out

Check the remote lead and see if it is getting power at the amp when it won't come on that way you know if the issue is with the head unit or the amplifier.

If the amp is a JL 500/1v2, it has a sensing switch which enables it to sense voltage, instead of running a remote wire. If this switch is set to on, and you have a remote turn on wire running to the amp........this can happen. I own one of these, and made that mistake myself.

check the connection to the battery gnd an remote also check the wireing of your woofers because a wire load to low for the amp will make it jump also check for any corrosion on the battery post

Re-check all the connections to the speakers, The uPC monitors all the outputs and if any are taking more power than they should, the uPC shuts the amp down to protect the internal components. Don`t use tape joints alone, try to run the cable the full length without any joints. If you do have to piece the wires together, solder them and stagger the connections, in other words, make one lead shorter than the other so that if the tape does come off, the offending connection is well away from the other so they can never meet or connect to each other. Ian

wire the sub in series it will give you best bang

Check to be sure you are on the correct outputs on the head unit, and be sure the outputs do not have a separate volume control.

Need more info here. did you run power from the 500/1 to the 300/4, or did you run the signal from the 500/1 to the 300/4? Also which amplifier is cutting out for a min...the 500/1, the 300/4, or both? each amp should be wired to a distribution block with 4 awg power wire recommended for each. the amps should also be wired without any capacitor.

This is an indication that the MOSFETs are ok but the driver stages may have a problem. Get a schematic find the pre-amp stages and test the voltages levels there as compared to the schematic. I do believe that you will find the problem in the pre-driver pre-amp atages.