Headlights

Post by **paulkilcoyne** » Sun Jul 01, 2007 2:46 pm

Has anyone got any idea why my headlights don't come on but full beam does?

cheers Paul

Post by **alex_holden** » Sun Jul 01, 2007 2:51 pm

It's probably a bad connection that needs cleaning up, or possibly a faulty dip switch. Switch the lights on and use a test lamp or voltmeter to trace the wiring from the dip switch.

Post by **kennatt** » Sun Jul 01, 2007 5:05 pm

99% chance of bad connection as alex says,if you havent got a test lamp or voltmeter go to the drivers side front under the bonnet and you will see where the wiring loom is connected to the lights,put the headlights on full beam and find the connector to the headlights, back trace them from where they come through the inner wing,Pull one off and if the main beam goes out,then reconnect and clean up the other one(Dipped connector)Obviously the reverse if the main beam stays on.This is the main point for most heaqdlamp faults.It shouldn't be a bad earth as that would effect the mainbeam as well.Good luck with it

Post by **RogerRust** » Sun Jul 01, 2007 5:44 pm

Could be a blown bulb!

Post by **alex_holden** » Sun Jul 01, 2007 6:18 pm

RogerRust wrote:Could be a blown bulb!

Two blown filaments?

Post by **bigginger** » Sun Jul 01, 2007 6:29 pm

Why not? Sudden jolt while the lamp is lit maybe

Post by **paulkilcoyne** » Sun Jul 01, 2007 11:02 pm

Thanks, I will give that a try. (not the hammer)

Paul

Post by **bigginger** » Mon Jul 02, 2007 12:03 am

bigginger wrote:Why not? Sudden jolt while the lamp is lit maybe

No, I meant it could have caused them both to blow

Post by **bmcecosse** » Tue Jul 03, 2007 9:59 pm

Actually - filaments rarely break when 'lit' - the wire is then nice and stretchy. They break when NOT lit. This is used as evidence after accidents to determine if lights were ON at the time of the accident.