Headlight intermittent still

[Deltic]

Hi everyone, reversing lights issue sorted, but could do with some help please. The nearside headlight is giving grief, side light is fine, full beam is fine, but no dip beam. Swooped over bulbs, same issue, cleaned all crowns and headlight connector without any difference.
I don't think the wiring is damaged but then it all works again for about a month and then goes out again for no apparent reason. Any ideas please. Thanks in advance

[Deltic]

Hi everyone, just seeing if anyone got any ideas on my earlier posting. Still not been able to resolve and frustrated. Hate electrics.

[marlinowner]

Hard to see it being anything other than a bad contact somewhere between the fuse (it has it's own fuse if blade type fuses) and the bulb. I would poke around these areas to try to produce the fault, if no joy I would change the H4 connector and the fuse to eliminate them.
Won't be an earth problem because it's shared by the main beam all the way from inside the bulb.

[Smosh]

Sounds like there is some dud wiring in there. Is it a early or late fuse box?
Each dipped beam on mine was on a separate connector on the fuse box. The early fuse box on screw with two screws which aids access. Might be worth getting your head under there and looking? Should be two yellow wires.

[Deltic]

It's early type with I believe the separate wires for the dip. Took them out yesterday and then wire brushed and liberal amounts of switch cleaner but didn't make any difference. Unfortunately electrics are a bug bear to me. Thanks for the suggestion, I'll see again.

[Smosh]

It's early type with I believe the separate wires for the dip. Took them out yesterday and then wire brushed and liberal amounts of switch cleaner but didn't make any difference. Unfortunately electrics are a bug bear to me. Thanks for the suggestion, I'll see again.

Likewise. Electrics aren't my strongest point.

I know you have done most of these. but just to be sure.

clean connections behind fuse box
check fuses
Remove connections from plastic on three pin to headlight, clean and refit.
change bulb for known good.
Clean earth
check voltage with voltmeter?

[Deltic]

Thanks for the advice, early type fuse board, will have a better look over the hols to see if I can sort it out.

[Smosh]

Managed to get away from Christmas to have a look?