A heat gun will help you get the wires out. They tend to melt into the switch

 

I also makes it alot easier to remove neutral safety switch if you remove the front driveshaft. Make sure you tape up the U joint ends so they don't fall apart and have needle bearings all over the floor. The connectors are a bitch! I cleaned mine up with carb cleaner to remove the old glue. I had to use a plastic tye to hold into place for I had really butchered the lock. Be careful not to totally ruin the connectors for they cost more than the vehicle is worth.

Regards,
Davis

 

Oh! I forgot to mention that once I cleaned up the connectors for neutral safety switch, I lubed up them up with electrical grease (same stuff that is used to put into boots for spark plugs). Made it much easier to install and hopefully if ever needing to be removed.
Hope this helps.

Regards,
David