professorman

My 01 996 has the passenger headlight out. I thought it might be the bulb, so I bought another bulb. Put in the new bulb and it's still out. Switched he old bulb with the driver side and it works.

I checked the high beam fuses #A1 & A2, they are fine, for good measure, switch them around. I checked the low beam fuses, A9 and A 10. They are good, switch them around as well. No luck, passenger headlight is still out.

All the other lights inside the headlight works.

What can I do to trouble shoot this issue?

dporto

It could be as simple as a dirty/corroded connector. Once you've cleaned everything up and made sure you've got good connections, you can move on to the Ballast/Transformer or igniter... Good Luck

professorman

What can I use to clean the connectors?

gnochi

Look for "electrical contact cleaner" in a spray can of some variety. You can find them on Amazon, or if you have a Fry's Electronics local they usually have them there as well.

professorman

What should I spray? Only the connector to the headlight?

gnochi

Yeah, spray the pins on the headlight side. It might help to install and remove the headlight a few times.

professorman

Anyone know how I can check the voltage to make sure electricity is reaching the wire? Which pins would I check against each other for the headlight?

dporto

a simple DMM set to DC 12 volts. Google "996 wire harness diagram" to determine which wires go where.

tokika

When I was having issues it was the switch . . .

professorman

Well, what do you know, I drove home this evening and when I got home, I noticed I had two beams of light shining... I took a look and the passenger light is now working. I hope it's not an intermittent problem. That would suck.

dporto

I've had problems with my passenger side as well. I changed my switch, which seemed to help initially, but it has also worked (or not) intermittently since then as well. I'm pretty sure it's a connection problem in one of the plugs but haven't figured it out yet.

abrodeur

Hi, on a 99 Boxster, can anyone indocate where the Ballast/Transformer for the pasanger low beam is located ? Thanks.

professorman

If you have litronic headlight, it is attached to the back of the headlight. If it is not HID, then it is just a bulb.