1987 Nissan 300zx non turbo Headlight problem

bad connection or bad earth check all connection or bulb

HELP! headlight not working even after change - Nissan Forums ...

www.nissanclub.com/...nissan.../302674-help-headlight-not-working-eve...

Apr 1, 2010 - 13 posts - ‎6 authors
My passenger side low beam headlight recently went off on me. ... I've changed the bulb again, and changed the fuse just in case, but .... My driver side headlight wire got loose so when i hit a bump at night if would flicker. ... When you notice one side not working (Low or High beam) it could be the module. Headlight replacement
15 posts
Jan 22, 2009
Low beams don't work but High's do
8 posts
Mar 20, 2005
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It could be your light switch is bad.

Is it a parking light hooked up too indicator switch

this circuit is fused also the headlight switch controls both functions for low as well as running lights

is your car equiped with an auto headlight dimming feature?

your headlight bulb needs to be replaced. you can buy it from the following link.

http://www.racepages.com/parts/headlight/nissan/300zx.html

My first guess would be the voltage regulator (most likely this one is in the alternator) is bad. The voltage produced by the alternator is varying widely causing, as in these two examples, lights to dim when output drops below normal and wipers to run fast when output goes above normal.

Solution would be to get alternator output checked and if alternator fails test, replace it.
A place like autozone can test your alternator, I think, for free.

Charlie

Check the wire harness and pay attention to the ground wire, it may have broke due to corrosion being out in the out door eliments. Good luck and hope this help.

If I remember correctly nissan uses a L&R high and low beam fuses,might want to double check them,but if you need any diagrams just ask have a good day DB