infiniti 135 2002 turns over wont start

What is your question?

parked it. ran fine. sat for a few days. when i went to ,it only cranks. security light quit blinking and only comes on if you turn the key to on position for a few seconds and then goes back out. nothing different done. all keys are the original dealer keys. would not start with a jump. clueless and not tech savvy. bought a used switch with another set of keys so i can start the thing. need instructions on how to install switch.

What makes this problem better or worse?

cranks but wont start

How long has your 2002 INFINITI I35 had this problem?

10 days