Signal Connections
POWER CONNECTIONS:
Before connecting anything, be sure to disconnect the ground terminal from your battery to
prevent any damage to the audio components. Leave the ground wire disconnected until all components
are hooked up and the stereo is ready to play. Remove the power terminal from the AX303P before
fastening the wires into the correct slots as a precaution. Make sure you are looking at the terminal with
the set screws facing upwards while following the instructions.
B+:
The first slot from the left is the B+ or positive (+) 12V terminal. Connect this terminal to a
positive (+) 12V lead using the same source that powers your amplifiers. This should eliminate any
chance of picking up noise due to voltage differences. If you decide to run power wire for the crossover
directly to the battery, be sure to add an in-line fuse within a recommended 18 inches of the battery post.
This will protect both the system and the vehicle from possibly dangerous electric shock. Use a minimum
of 16 AWG stranded copper wire for this application and be sure to apply grommets whenever the power
wire is run through any metal wall.
GROUND:
The second slot from the left is the ground or B- terminal. To ground your AX303P, locate a solid
metal area close to the crossover that is a good source of ground (preferable the floor). Your best ground
will come from a grounding point attached directly to the frame of the vehicle. Investigate the area you
wish to use for electrical wires. Do not try to move vacuum, break or fuel lines. Using either a wire brush
or sandpaper to eliminate unwanted paint to supply a better contact when grounding. Use the same
gauge wire for ground as you did for the power wire. Terminate your ground wire using the correct size
ring terminal and attach it to bare metal using a #8 sheet metal screw. It is important for this connection to
be solid. To complete the job, spread silicon over the screw and bare metal to prevent rust and/or water
from entering.
REMOTE:
The third terminal from the left is the remote turn-on. This terminal must be connected to a
sw12V source. Typically, remote turn-on leads are located by the source unit, which are used to
turn on and off all processors in correspondence with the source unit. If a radio does not have a remote
turn-on, then a power antenna wire may be used.
