Turn the defroster on and check for 12v at the connector on the window. If you have 12v, check for breaks in the element (the thin lines running across the window). If you do not have 12v and the fuse is good, the culprit will most likely either be the switch or the wiring.
For the right park light:
Check the bulb socket. You should have 12v at one terminal (with the park lights on) and ground at the other. If the voltage and ground are ok, you either have a bad bulb or possibly a bad socket. By bad socket I mean they can sometimes distort and not allow the terminals to make good enough contact.
Answers & Comments
For the defroster:
Turn the defroster on and check for 12v at the connector on the window. If you have 12v, check for breaks in the element (the thin lines running across the window). If you do not have 12v and the fuse is good, the culprit will most likely either be the switch or the wiring.
For the right park light:
Check the bulb socket. You should have 12v at one terminal (with the park lights on) and ground at the other. If the voltage and ground are ok, you either have a bad bulb or possibly a bad socket. By bad socket I mean they can sometimes distort and not allow the terminals to make good enough contact.
Hope this was helpful.