prodrive.greeny

iTrader: (3)

So decided to replace my perfectly functioning dipped beam bulbs for these '100% more powerful' units. Fitted them, powered them up and 'oh, only the nearside is working'.

The nearside is working as it should but the offside is only lit up faintly.

Put the old bulbs back in thinking it was a dodgey new set and 'oh crap' same problem again now but with the old bulbs.

Thought was an earthing problem so routed an earth lead straight from the bulb fitment to the chassis and no improvement.

Any ideas??

Kedlestone

iTrader: (9)

Try the fuses mate, same happened to me.

prodrive.greeny

iTrader: (3)

Oh really? That simple. Thought as the bulb was still getting some power the fuse will be ok? Can you remember what fuse it was? Cheers

Turbotits

iTrader: (2)

Sounds like youve disturbed the earth wiring.

Kedlestone

iTrader: (9)

Yeah it was the main headlight fuse in the fuse box in the engine bay, near side in my occasion.

Turbotits

iTrader: (2)

Just re read. Youve tried an earth. If its faintly lit. That would suggest a broken wire or bad connection. Check the wiring at the plugs where the plug onto the bulb. Ive had to cut the plug of in the past and use spade connectors

alcazar

iTrader: (2)

Look in the fusebox under the bonnet, the fuse protecting the offside lights will be blown.

prodrive.greeny

iTrader: (3)

Thanks for replies. Will check fuse out tomorrow. Turbotits how come you think its wiring then, i'm really hoping its a simple fuse now after the other suggestions. Also what amp fuse and i'll get one in advance? Cheers

prodrive.greeny

iTrader: (3)

Oh and also on subject of lights.. how do you get to the sidelight bulbs? Looked to me like a bumper drop down job

Turbotits

iTrader: (2)

Coz i tend to agree with you. You say it lights up dimley. i would expect if the fuse had blown for it to be totally dead. The fuse could be blown and your getting some back feed via the earth from the other side. But thats pretty unusual. So some voltage would indicate a connection or broken wire to me.

DonNedly

iTrader: (10)

you have to remove the headlight to replace the sidelight. remove the grill and 3 bolts then wiggle it out.

prodrive.greeny

iTrader: (3)

hmmm, frickin electircal problems!!

prodrive.greeny

iTrader: (3)

Ok so can someone clarify which fuse is for dipped beam? I can only see a relay.
Checked voltage readings and there's power (11.7 volts) to relay, but no power to headlight itself. As said the bulb is now evidently getting feedback from the earth point.
Presumably there is a short somewhere between relay box and headlight. *****

alcazar

iTrader: (2)

There's no FUSES in there at all? There are on a classic.

In that case, check the fuses in the fusebox under the dash, driver's side.

prodrive.greeny

iTrader: (3)

Ok so it was the fuse. I feel like a prize bellend.

Thanks for help team.

alcazar

iTrader: (2)

Now, how does that phrase go......."Told you s............."