Hi, had some H3C lights and thought id put them in for comparison, put them in, clamped, and took the flying lead with a spade to the connector. plugged in to the live and switched on. Nothing. took it out and placed the baseplate against bolt head Voila!! let there be light. So I thought the baseplate was the earth so a lead to the earth side of the connector wasn't needed.

Where am I going wrong...

 

Cheers

 

Rich

H3C bulbs don't have flying leads!

Just two prongs.

DOH, my Bad, Of course I meant H3. I've been looking at all types recently and got confused.

 

Thanks

 

Rich

The headlight baseplate is electrically isolated from the cars earth. OEM should have a short length of "earth" wire fixed

to the headlight baseplate to connect too.

Andrew, Hi, Thanks, the H3 I've got looks like this, the flying lead is for the power supply , or so I am lead to believe. So if that's the case, where is the Earth

 

Rich

The body of the bulb touching the headlamp holder is the earth, but you will need to make a short wire tail from the body to the holder plate to earth it.

The body of the bulb touching the headlamp holder is the earth, but you will need to make a short wire tail from the body to the holder plate to earth it.

 

Yup; Graham is right - assuming you have a J-spec car; because the body of the bulb-holder will not otherwise be earthed unless you do the above modification.

Okey Dokey, Thanks guys, appreciate the advice, '

 

if your okay on head units and speakers, try and help me out on my other post

 

Cheers

 

Rich

Andrew, Hi, Thanks, the H3 I've got looks like this, the flying lead is for the power supply , or so I am lead to believe. So if that's the case, where is the Earth

 

Rich

 

This picture shows the black earth lead connected to the H3 bulb mounting baseplate, the other end of which

goes to the low beam harness ground connection. The flying lead on the H3 bulb goes to the +12v supply low

beam harness connection.

 

Thanks guys all good information, gratefully received, Andrew, great pic, just what I needed, seems you're helping me a lot lately

 

Thanks

 

Rich