Some problems need help.

[Chris95GST]

Hi, recently I have been having some problems with my car. One problem I have is that after my car is been driven somewhat hardly And I push the clutch and put it in N to slow down right after letting off the gas my revs drop really low and some times I start to stall or do stall. Also my lights on the gauges are dim at idle and get brighter with the increase in revs. Also my lights blink to the "tune" of the turn signal when I have it on.
Also my A/F volts sometimes gets stuck at going to .3XX and won't go past it if I have my headlights on for a while. Most of the time this is fixed right after it turn my headlights off then on agian. The last problem I am having is that my turn signal is really hyper but this is just because the bulb needs to be changed right? Thanks for any help.

 

[PRESSURIZED]

Sounds like a bad main ground to me. I would check the ground on your battery to chasis connection, also just for the hell of it add some 6-8 gauge wire from your engine to the chassis...add some more grounds.