headlight burnout

[superduty250]

have an o6 attak had guage problems at the same time headlights burned out. first low beams then high beams, replaced bulbs only high worked. they lasted not even a hour then they popped one after the other. no wires looked damaged don't know where to start, somebody please help?

 

[Roadrider]

Usually that is indicative of too high a voltage. So check your voltage
regulator. Rev it up to 2500 or so and put a volt meter on the battery.
You should see 14.1-14.9 volts with no load. Everything turned off and
the battery fully charged.
It's one of the old cheap short to ground style regulators, so when they
quit working the voltage can go quite high under light loads. It's a 35 amp
system.

 

[superduty250]

can this damage anything else if not corrected asap

 

[Roadrider]

It sure can.

 

[aVenture]

Check your battery connectors carefuly... clean & torque.
A good (well connected) battery will never let voltage goes as high to a point to burn your light like this. It eat current like hell and burn regulator or megneto well before that. On a discharged or frozen battery then voltage can go high. Your prob is either the regulator with a battery that cannot shunt the excess voltage (bad too), or only the battery or its connectors. Does she crank well when real cold ? As stated above, you have to hook a meter now on the system. Do the reading at the battery pole and at bulb's connector. Have also a reading on the AC scale at the bulb level so you may read if ripple there is, it help troubleshooting wiring & connectors.

 

[Roadrider]

The battery cannot absorb the juice before it goes through the system
when it's not being shunted to ground. A burn't regulator is not shunting,
everything has to go through the system somewhere first.