Quote:
Originally Posted by raunchero  When the headlight switch is bad it draws too many amps and trips the breaker. When it cools down the lights come back on. The fix is a new headlight switch. |
His switch has burned contacts, so the resistance across it will either be very high or infinite.
A short on the other hand has little or no resistance. Remember the Ohm's law states that I=V/R. In these cases with "V" staying the same and "R" decreasing "I" increases. Thats why shorts blow breakers and open switchs don't. If you check the resistance across an open switch it will read ∞. An open switch in a circut will not blow the fuse or trip the breaker.
I'd bet the problem is more in the continuity side. That the headlight switch's terminals aren't making very good contact.
