Head light problem

Anything to do with nuts and bolts that is not associated with a build thread
Post Reply
BillG
Rickman Fresher
Posts: 34
Joined: Sun Nov 01, 2009 9:44 am

Head light problem

Post by BillG » Fri Nov 24, 2017 12:41 pm

Last night on my way home I put on the headlights as you do and thought it didn't seem too bright, when I got home the off side lamp was dim on low and high beams.
Today when I've started to look into it both filaments are lit, didn't expect that, anyway changed the bulb and it was the same, rigged it up so only one spade connection was made and a separate earth connected still the same?
I removed the near side bulb and the offside doesn't work at all then but comes back on dim when the near side bulb is put back, I've looked for damaged wires and all looks ok and the switch and fuses the same, next I'll have to seek out any relays in the system, but it all seems strange to me, any suggestions welcomed

User avatar
Simon_Admin
Rickman Guru
Posts: 836
Joined: Tue Nov 08, 2005 3:00 pm
Location: Hessle
Contact:

Re: Head light problem

Post by Simon_Admin » Fri Nov 24, 2017 2:09 pm

Hey Bill,

If you have both filaments on at the same time It's probably a missing ground so the current is going though dip & main filaments to ground via the other headlamp's main filament - hence why when you take the other lamp out it goes off. Assuming you have the standard mk2 escort loom there are no relays, the headlamps are connected straight to the switch.

In these circumstance a multi-meter is a great aid even a cheap one !

BillG
Rickman Fresher
Posts: 34
Joined: Sun Nov 01, 2009 9:44 am

Re: Head light problem

Post by BillG » Fri Nov 24, 2017 3:51 pm

Thanks Simon, I've been using a multi meter and it shows a good circuit to ground, I even ran a second earth to eliminate that possibility, I'll be continuing the tests tomorrow including a second ground.
It's fitted with a newish loom, I've only found one fuse for the lights and that was for low beam, but I'll keep looking

BillG
Rickman Fresher
Posts: 34
Joined: Sun Nov 01, 2009 9:44 am

Re: Head light problem

Post by BillG » Sat Nov 25, 2017 12:19 pm

Day 2,
The checks and testing continued, the lamp was still dim and when the near side bulb was removed the off side wouldn't work, I tested the voltage at each connector for the bulb and strangely had 12v on two pins on high or low beam, but not the same two? I removed the pilot bulb, retested voltage and got voltage on only one pin at a time, better, finally after now fitting a new ground wire and connecting it to he existing ground I had again fully working head lights, thanks again Simon for your input.

User avatar
Simon_Admin
Rickman Guru
Posts: 836
Joined: Tue Nov 08, 2005 3:00 pm
Location: Hessle
Contact:

Re: Head light problem

Post by Simon_Admin » Thu Nov 30, 2017 11:14 am

Good to hear u fixed it !

Electrical faults can be a right nightmare, especially on plastic cars !

ABurgess
Rickman Fresher
Posts: 32
Joined: Mon May 16, 2016 6:30 pm
Location: Tetney

Re: Head light problem

Post by ABurgess » Sat Dec 02, 2017 11:50 am

Hi Bill. My thought were the same that by cleaning the earth connecter would solve your lighting problems. Another problem I used to experience on my Ranger was when turning off a main road with street lighting to a back road was to switch on my high beam and find I went blind it was actually the high beam was not working, this usually happened the first time in the autumn that I needed to use those lights, the problem was a tarnished fuse just needed cleaning and bingo lights were fine again.

Alan.

Post Reply