I have 86 trans am new 383 stroker installed ever since the job was I have charging issues new battery and new alternator but won't charge the gauge spiked all the way to 18 volts I smelled something in car now it won't charge battery what do I do
I would start with the voltage regulator or maybe make sure you dont have a wire crossed somewhere.
The voltage regulator is built into the alternator. It is defective and maybe burned out shorted causing the smell. Replace the alternator with a reputable remanufactured one and you'll be fine.