1990 300zx z32 rough idle turning on accesories
 

I have a 1990 non Turbo 300zx that idles roughly when I turn on Headlights or A/C or Radio etc. I can't figure out why. Any suggestions would be appreciated

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Nothing really to help, I have the same problem. Ive checked all the sensors (MAF, TPS, temp, etc) checked most of the wiring--found one exposed wire, but nothing!! I'm going to go through all the fuses and see if that helps anything bc none have been changed since 1992 when it was new. If you find a solution let me know.