I have had the Osram's for only 4 months.

As Lao Tzu says: "The fire that burns twice as bright burns half as long"(also quoted in Blade Runner).

At $35 for 2 they are not so bad.

 

Can I test the voltage from the light socket? Sorry novies Lr owner.

 

Yes, make sure you're getting 14+ at the socket that plugs on to the bulb.
Start the car, turn on the lights and any other accessories, like heater blower.

Test between the pos and negative posts of the battery, to make sure your meter is working and the charging circuit is good
Test between the high beam connector and the ground connector. If it's 14+, you're good so repeat for the low beam.
If not 14+ test between the high beam connector and the battery.
If it's 14+, you have a ground issue between the socket and battery.
If still not 14+, test between the pos side of battery and ground connector on light socket.
If it's 14+ you have an issue in the positive circuit to the light.
If it's still not 14+ you have a problem in both pos and ground.

Repeat for low beam.
Repeat for other headlamp.

 

I got the Sylvania silver star ultras. They light up the road way better than a regular bulb.

 

Those osrams are great, I run one in my bike

 

I do a LOT of driving at night and have very little trouble seeing with the stock lights. I work 2nd shift and head home around midnight, and it is 45 miles on the backroads.

Make sure you have good voltage at the bulbs, and they are in good shape (clean inside and out) and aimed properly. Brighter bulbs usually don't last as long (unless you go with HID)

 

Will these H4 light have running light?
Sorry old thread. Just revisiting my projects.

 

Head lamps replaced. I noticed there was a little bulb missing. The running lights I assume. I can't seem to find a replacement.

 

they're just 194 bulbs IIRC

 

Thanks. I went into autozone and they helped me find them.