Okay, how can I tell for sure with my muti-meter if my headlight bulb is out?
I have PIAA bulbs in my headlights. One of my headlights is out right now. I figure it's just the bulb. After looking on the internet, I found that the superbright bulbs that are in my Jeep are REALLY expensive. $50 - $60 for one bulb is what I'm finding!?!?!
So, I want to really make sure that the bulb is out.
I took the bulb and tested it on the Ohm setting with my multimeter. I took 2 bulbs that were good and tested them. When I touched the leads to the outside & center of a good bulb, my multimeter said "short". When the terminals weren't touching the bulb, it said "open".
Here is what my H4 bulb looks like:
For illustration let's number the terminals from top to bottom 1, 2, 3. The parallel terminals are 1 & 3. The center one that's facing 90 degrees different from the other two is #2.
When I hooked up the multi-meter to two of the three leads, it gave me the following results:
Hooked up to 1 & 3, the two parallel terminals: Short
Hooked up to 1 & 2, two perpendicular terminals: Open
Hooked up to 2 & 3, the other two perpendicular terminals: Open
So, basically energy isn't flowing through either of the perpendicular terminals, but will flow through 1 & 3, the parallel terminals. Does this confirm that my headlight bulb is really burnt out or does it tell me something else?
Help me out!!