Main Beam

[jbuckl]

Main Beam stopped working last night, what are the usual culprits?

Main Beam flash still works.

Dipped Beam still works.

Dash illumination still works.

Wiring is standard.

Thanks
Julian

[mallardstag]

Hi Julian,

The most likely culprits are the main/dip switch contacts or the blue wire from the main lighting switch to the main/dip switch.

Measuring at the dip/flash switch you should have 12V on the blue wire when the dipped beams are on and 12V on the blue/white wire when the main beams are on. If the former is missing then check the blue wire, if the latter then the switch contacts are probably faulty.

Simon

[malc4d]

Take the indicator/main/dip switch out and clean all the contacts with fine sandpaper.

[jbuckl]

Thankyou chaps!

[Kevin Garrod]

I posted about this a few months ago, I had no electrical connection between the contact and the copper strip it sits on.
I did a bodge to get it working but have since done a better job.
I cleaned both the contact and the strip with emery, applied plenty of flux and gave it a good soldering!