oil temp needle&cockpit light&circuit breaker

[crousti]

when i take off whith cockpit light on, after few minutes, temp oil needle go back to zéro, then i reset the circuit breaker (which is out), the temp oil needle works ! then i put the cockpit light on and ! bingo, circuit breaker out, needle back to zéro....

[=475FG= Dawger]

Sounds like an electrical short