Help with dash wiring.

[usraptor]

'70 'Cuda with Rallye dash, 4-speed.  Original wire harness.  When I turn my headlights on my left turn signal light on the dash comes on and stays on as long as the headlights are on.  It still flashes when I turn on the left turn signal or flashers.  It goes off when I turn off the headlights.  This is a new issue as it didn't used to do this. Also, coincedently my Rallye road lights stopped working.  When I put a test light on the terminals at the switch it does not light up no matter which position the switch is in or whether the headlights are on or not.  Also, recently the "red" brake light on the dash stopped working when the parking brake is set.  Have no idea if these three issues are related but they did all seem to occur about the same time. Also, I just found out today that the open door  buzzer works when I leave the keys in the ignition for the passenger door but not the driver's door.
I've checked the OEM fuse block and all the fuses are good except for very top fuse slot that says "Acces" on it; it never has had power even before the above issues started.  It shows no power on either side with the key on or off.  I have no idea what this particular fuse is supposed to be for as everything else sees to work properly, or used too.  All the dash gauges work, the dash lights come on with the headlights, the dome light works,, the yellow reverse light works as does the radio. All the heater control switches work as well as the three speed wiper and dimmer switch.

So I'm looking for some advice as what to check next.  I don't know if the above issues are related and I'm only really concerned about the left turn signal coming on with the headlights and the rallye road lights not working.  I can live with the other issues if they aren't connected. For you electrical experts out there, any suggestions as what to check next would be greatly appreciated. 

[JS29]

@usraptor           I have found one of the sockets was feeding back. take out a bulb on the left front signal light and turn the lights on. if it is still doing it, do the same on the back. It will do this with just the parking lights, and no head lights i would think. 

[usraptor]

Thanks JS29, I'll try that tomorrow and let you know.

[usraptor]

JS29, you hit the nail on the head.  Left front turn signal bulb was not seated properly.  I reseated it and the left turn light no longer turns on with the headlights.  No sure what it had to do with it but the brake light on the dash no comes on again.  Unfortunately, the road lights still don't work so I'll have to attack that another day. Anybody have any idea where the power source is for the road lights. 

[JS29]