I have a 1985 nissan 300zx i installed the battery backwards, now the wipers,dash instruments,power light motors,and turn signals do not work

Not likely. That feature is built-in to the stalk switch. I'd look for another switch (ebay, etc) or go to a local Used Car parts (salvage yard / U Pull) and get one.Very likely that other Nissans from that year used the same switch - doesn't have to be from a 300ZX. Good luck.

Start signal comes from the clutch engagement switch. When you press the clutch the pedal arm hits a switch and signals the motor to be able to start. Look and see if you have a little rubber piece pushed through a hole on the clutch pedal arm

Hi Patricia,go to Autozone if you can,they will check your alternator and battery for free,only takes a few minutes.

Under the dash (I'm asuming you have s digital dash), if you look under there close to where the console ends, you will see a kind of goldish colored box about 4 inch or so square (I think it's square,
I haven't worked on one in a long time with that problem) There should be another box to the left of that, I am only giving you a reference point so you know you are in the correct area. Anyway, the smaller box is the power supply to the digitsl dash. If that goes bad, the dash won't light up. The symptoms typically are that part of the dash may work for a little while and then the whole thing goes out. All you can do is replace it. They are hard to find in a salvage yard and then you are takeing a chance.I hope I have answered your question. I'm sure I have solvdd some problems out there for a few people.

You blew a fuse. Im guessing most likely culprit is a fusible link. try both sides of fusible links found by your battery. both sides should show your approximate battery voltage. check all fuses especially ones that show power regardless of the ignition switch being on or off.

sounds like a voltage issue.
I would have the altenator tested and also at the same time have the battery tested.

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That's the dummy light for the radiator or cooling system. If it comes on during normal running operation, it's indicating that the coolant is low or hot, and likely overheated already.

Here is a photo:

You need to check for power at the motor when you try to activate the switch. If there's power then you have a drive cable issue. If this is a manual seat then the problem is the actuator assembly itself,the cable,mechanism,etc. Remove the seat & take a good look at it. You'll see a problem,write back.

Distributor is at fault

REPLACE THAT PART BOSS