I've never had this problem before, and I'll start by saying these magical words:
I just redid the harness (so I could solder all connections and use shrink wrap, before it was really ghetto).
I have a mach 460 with a Alpine 9813 headunit. The mach is being driven off the headunit's 4V preamp outs for front and rear. The sub outs go to a A/D converter and are sent back to a amp and sub setup.
Anyways, my problem is this: I can hear a static that's in the pattern of the motor firing at all speeds. Its sometimes quieter once I'm cruising, but it sounds very similar to a small header leak I have (pft pft pft type deal).
So where can ingress noise be coming from? Bad ground? I've rechecked my harness, all the connections are good, there are a set of gauges below the headunit, and I know those long thin wires could carry noise back, and I believe they share a ground.
Thoughts? This thing drives me nuts.
I just redid the harness (so I could solder all connections and use shrink wrap, before it was really ghetto).
I have a mach 460 with a Alpine 9813 headunit. The mach is being driven off the headunit's 4V preamp outs for front and rear. The sub outs go to a A/D converter and are sent back to a amp and sub setup.
Anyways, my problem is this: I can hear a static that's in the pattern of the motor firing at all speeds. Its sometimes quieter once I'm cruising, but it sounds very similar to a small header leak I have (pft pft pft type deal).
So where can ingress noise be coming from? Bad ground? I've rechecked my harness, all the connections are good, there are a set of gauges below the headunit, and I know those long thin wires could carry noise back, and I believe they share a ground.
Thoughts? This thing drives me nuts.