Having a problem starting - driving me and wife crazy.

1998 ford explorer, Automatic trans., 4 door model -

Sometimes when you attempt to start (4-6 out of 10) - you get nothing - no sound - nothing. Keeping the key in the "energize" starter mode (momentary), if you grab the shift handle and move out of park, the engine will start - sometimes it won't. I have replaced the "Limit" switch (on transmission) already - it is properly alligned with neutral.

Outside of the ignition switch, the limit switch, and the starter- is there another break in the wiring (ie a relay)? If so - Where?

Since there are no bites on the original post - anybody know where I can find an electrical diagram of the explorer starter circuitry - so I'll know what to look for?

Have you cleaned the Battery terminals, Simple but you failed to mention it.