69 valiant electrical gremlin turn signal and license plate light

okay. Here is what happened after the systemic check:

• all bulbs replaced and checked that they were seated correctly
• when parking lots are on, the indicator light on driver side (the one that has not blinked when parking lots are on) is the brightest
• with parking lights off, both blinkers work however the passenger blinker light in front is brighter (which is opposite of when they are just on in parking lot on mode)
• if i remove the ground wire from the passenger indicator light, the light still lights in parking lot mode, and when using the blinker, either with or without parking lights referenced in post 24.
• for the driver side indicator (the one that has been a bugger), if i disconnect the ground the light doesn't work at all (
• Back lights are the same brightness no matter what mode is used. parking lot on and off blinkers, they are identical
• Headlights are constant and the same brightness no matter what i do. They are equal brightness.
• Obviously something has to do with when parking lights are engaged.

I don't even know where to check for the ground issue, or whatever it is. Any suggestions friends??