This started as an intermittent problem for a few months and now is permanent.

The problem seems to be with the driver's side front marker light. With headlights off, if I activate left turn signal, I can hear blinker clicking super fast, and can just barely see the turn indicator flickering. The signal seems to be so fast that the indicator can't turn on and off quick enough. The display on my aftermarket radio dims in sync with the blinker, and volt and oil gauge dance in time also. However, no blink from turn signals or side marker.

With the headlights/parking lights on, left turn indicator on dash is on constantly. Side marker light does not come on. Front and rear turn signals are on at full intensity, visibly twice as bright as passenger side. If I activate turn signal, it will blink once about every 8-10 seconds. When it does blink, I still get a response from the radio display, volt and oil gauges.

On the passenger side, everything works perfectly.

Tried 3 new bulbs in side marker, and the working bulb from other side, side marker will not come on. Checked socket for voltage, nothing. I went ahead and cut the socket off thinking it was bad, but still no voltage when I check the bare leads. I did a continuity check on the socket and it is good, so I cut it off for nothing. Oh well.
Checked the grounds inside the fender and they were fine, no corrosion, tight connection. I have not had any problems with the headlights so I figured ground would be good, but checked anyway. Checked resistance from the side marker black wire to ground, got .8. Not bad. But then, I checked from the blue wire to ground. If I am correct, I should not get a reading here, but I got the same .8 . I would interpret this as the hot wire is shorted to ground somewhere, but I'm not familiar enough with the wiring to go any further than this.

If someone can give me some help on this one, I would really appreciate it.

The reason you're getting 0.8 ohms when you test the blue wire is because your multimeter is finding a ground path through both turn signal light bulbs in the dash, the front marker light bulbs, and the passenger side marker light bulb. That's normal. The same thing happens when you measure the resistance of the black wire too. You'll have to unplug all of these bulbs to get infinite ohms on an open circuit and zero ohms on a grounded circuit.

Troubleshooting this circuit is a little complicated in writing since it's a somewhat 'involved' circuit (hazard flasher, turn flasher, and the turn/hazard switch assembly, light switch, even brake switch). But to take it one step at a time, I'd first swap out the hazard flasher near the audio alarm, with the turn signal flasher near the LH steering column bracket and see if that doesn't cure the problem, at least with the turn signals. If it does, then buy a new flasher module for a couple bucks and replace it. If it doesn't, then recheck your wires as above once you've removed all the bulbs in the circuit and post your results for more advice.

Bloozberry-
Just read your reply. It's too late tonight for me to pull out any tools, but you made me think about the hazard. I hadn't tried it yet. So I just walked out and pushed the hazard. I did not have the keys in. The hazard appears to work normal, front and rear signals on both sides blink properly, along with the rear markers. Neither of the front marker lights is blinking, but I think that's normal for hazard (is it?) When I went to shut them off though, I noticed that all of the dash lighting was blinking on and off with the hazards. I've never used the hazards before, but I'm sure thats not normal. Keys are not in and lights are not turned on, just the hazards.

The front marker lights on the side of the car are supposed to blink with the hazards on, but not the rear side markers. Also, all the dash lights aren't supposed to flash. Just for curiousity's sake, do the turn signal arrows on the dash also flash in hazard mode? Anyways, given that your hazard switch and hazard flasher work (somewhat), I start by replacing the TURN signal flasher. It's the most likely cause of most if not all your problems.

ok, got it fixed today. I pulled the front turn signal bulb and there was corrosion built up between the two contacts on the bulb. Since the higher output filament is lower resistance, any signal to the bulb was lighting up the high filament, and the extra current draw was stealing from the side marker, leaving it off, and screwing up the blinker which depends on proper resistance to flash correctly. After replacing the bulb, lights were working properly in hazard - front and rear turns, plus front side marker, no rear marker or interior flashing.

With headlights off, left turn signal and lights would turn on, but not flash. Headlights on, no response at all. Replaced flasher unit and presto! everything works now.

Thanks for your help Bloozberry, appreciate the input.

Good to hear you're making headway. Check to make sure the harness isn't being pulled one way or the other by the headlight mechanism. It may be fraying the wires to the markers also. BTW, the signal light sockets can be bought at just about any auto parts store. They're fairly common.

Maybe a stupid suggestion, but I did this once myself. Make sure the signal bulb is 1157 and not 2057. They look identical, but caused exactly the problem you describe.

ok, got it all fixed now. when I put the new front bulb in I had not quite twisted it all the way. Just went for a half hour drive with plenty of bumps and it's still working proper.
Now to the rest of the fixit list...