How Do I Test the Neutral Safety Switch?

[ejsharp]

This request is somewhat urgent. Our 190E won't start. It must be the solinoid or the neutral safety switch that is causing the problem. Car has been down for almost a week and we need it for wife to go to work.

Can someone tell me how to test the system to determine what part is defective? The starter will not engage and I tried to start in neutral and in park. Battery is very good.

Things are very tight in the 190. I cannot see much on the driver's side of trans and starter is almost inaccessable.

Any help from an experienced tech would be most appriciated.

Thanks.