How do I Check safety neutral switch

Ok it seems you isolated and checked the usual suspects and some that I wouldn't have looked at except one. Did you check the neutral safety switch and Alignment on your gears for the gearshift lever. If it is not aligned properly it may not be hitting the neutral safety switch when in neutral and park. Also if the switch has failed. It may not be allowing your system to start when you move the key to the start position. I'm also wondering if this model has a fusable link in the starter cable but you say that you've isolated and tested both the starter and the relay. So I would really suspect that neutral safety switch. Hope this helps.

check for good clean and tight connections at battery,di it start fine before battery went dead is battery good have it checked ,then look at other possibles starter is it in park move the shifter around sometimes the neutral safety switch acts up ,check fuse for ign fuse blown

neutral safety switch or ignition switch...if dashlites, etc come on when u turn ignition on, prob neutral safety switch...chek brightness of headlights for good all around connections...

Year make and model ?
If there is no voltage from the battery, check for a fuseable link and the connections at the battery and ground.
If no power from the key switch, check the neutral safety switch and the key switch.

check the newtural safety switch on transmision

If it doesn't even turn over, have you checked safety neutral switch?

Check the neutral safety switch,and then the ignition switch.

Have the battery checked,and the battery connections checked to make sure they are not corroded,then check neutral safety switch,and starter.

I don't think so. I got a 95 and I've done all kinds of electrical checking for various things and to my knowledge there isn't. There's fuses for the ignition and engine along with other electrical items but no specific computer fuse that would turn off a computer. I assume the car won't start?

If your car is simply not starting it could be something as simple as the neutral safety switch if you only hear a click turning the key. Disconnect under left side dash. White and has a green and black wire coming from button behind clutch pedal.

If car cranks but just wont start then could be numerous things. Check the 30 and 40 amp fuses under hood. Make sure battery terminals are connected tight and clean with brush tool if needed. If battery is fine and charged, I assume you have checked, then I'd focus on the ignition system.

ignition switch (in steering column)
neutral safety switch (disconnect above pedal)
starter relay (under radio)
starter solenoid
starter

If cranks then neutral, ignition and relay switches are fine
If clicks then ignition and relay fine but neutral switch or solenoid may be bad

Check the battery and cables going to the starter. Weak arc? Possible that the relay needs to be rechecked now. The inertia switch may also be a possibility. Has the car been in a recent fender bender?