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DB18-1 Headlights

Frankie&Ollie
Posts: 6
Joined: Mon Mar 25, 2019 7:21 am
Location: Poole, Dorset. UK

DB18-1 Headlights

Post by Frankie&Ollie » Mon Mar 25, 2019 7:33 am

We've recently purchased a DB18-1 and noticed that the offside headlamp was out when on dipped beam, OK on main beam. Checking the bulb and then the wiring diagram, I see it only has one filament/feed so will only work on one setting!
Which should it be please, dipped or main?

Sydsmith
Posts: 774
Joined: Sun Feb 14, 2016 11:15 pm
Location: Aberystwyth Wales

Re: DB18-1 Headlights

Post by Sydsmith » Mon Mar 25, 2019 11:28 am

Hi Frankie and Ollie

I see you are in the UK and for many years it has been the requirement that both headlights stay illuminated on both dip and main beam.

As the car has not required an MOT for some years I can only assume the previous owner/owners have not had to comply and therefore have got away with it.

The way forward is to obtain a duel filament bulb holder and add additional wires to illuminate the twin filament bulb.

Should be simple enough to run an additional cable from the other headlight dipped filament connection. Syd

qantasqf1
Posts: 120
Joined: Mon Mar 07, 2016 10:13 pm

Re: DB18-1 Headlights

Post by qantasqf1 » Mon Mar 25, 2019 8:14 pm

If the law is the same as here in Australia, then the car merely needs to conform to the original specification/configuration to pass the MoT test. Seat belts and 4 wheel brakes are good cases in point. As far as DB18 headlights are concerned, the original design was that the dipswitch operated both headlights when on full beam, but on dip both single filament headlight bulbs were extinguished and at the same time illuminated the pass light, which was a separate lamp (rather like a spotlight) fastened to the near side bumper support bracket. Lots of owners converted to modern 2 filament bulbs, which is a much better arrangement, a fairly straightforward job.
Steve

Sydsmith
Posts: 774
Joined: Sun Feb 14, 2016 11:15 pm
Location: Aberystwyth Wales

Re: DB18-1 Headlights

Post by Sydsmith » Mon Mar 25, 2019 9:51 pm

Been the law in the UK since 1971 when it was made compulsory that both headlights should dip.

The old pass light system does not comply. Syd

grahamemmett
Posts: 574
Joined: Mon Feb 08, 2016 8:12 pm
Location: Northwich, Cheshire
Contact:

Re: DB18-1 Headlights

Post by grahamemmett » Mon Mar 25, 2019 10:47 pm

Hi Frankie and Ollie

Yes you still have the original set up and no idea how the car has been through an MOT since the 1970’s.
While I’m on, please sign up to www.DB18.org and let us know more about your car - the chassis number is particularly important. It may be that we have some history for it.
Graham Emmett
Northwich, Cheshire
Joint DB18 Registrar (with Marcel Renshaw)
DB18 1949 LCV522 (Yes that one with the P100s)
https://www.db18.org

Frankie&Ollie
Posts: 6
Joined: Mon Mar 25, 2019 7:21 am
Location: Poole, Dorset. UK

Re: DB18-1 Headlights

Post by Frankie&Ollie » Tue Mar 26, 2019 7:28 am

Thanks all for the replies, looks like I've got some wiring to do!
It was a barn find so hidden away for about 30 years so probably why it's got away with it thus far.

Will register with DB18.org

User avatar
John-B
Site Admin
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Joined: Tue Feb 09, 2016 9:10 pm
Location: Salisbury, UK
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Re: DB18-1 Headlights

Post by John-B » Tue Mar 26, 2019 7:38 am

Remember that if you apply to have the car tax exempt you don't HAVE to change the dipping system, just don't drive at night and don't get an MOT.

John Hitchins
Site Admin
Posts: 202
Joined: Mon Feb 08, 2016 10:52 am
Location: Wellington Somerset

Re: DB18-1 Headlights

Post by John Hitchins » Tue Mar 26, 2019 6:21 pm

My DB18 1 had the solenoid dip system where the hole interior dipped on one headlight. Quiet a system really.

New Dexter
Posts: 377
Joined: Fri Feb 12, 2016 9:41 am

Re: DB18-1 Headlights

Post by New Dexter » Tue Mar 26, 2019 7:06 pm

What about those vehicles such as DE models that have single filament headlamp P100s so that when the dip switch is operated the two bumper mounted lamps come on as "dip" beam and the P100s go out?

John Hitchins
Site Admin
Posts: 202
Joined: Mon Feb 08, 2016 10:52 am
Location: Wellington Somerset

Re: DB18-1 Headlights

Post by John Hitchins » Tue Mar 26, 2019 8:29 pm

My DB18 2 has both headlights go out on dip and the 2 spotlights come on. I used to drive in the dark but was flashed by so many drivers when dipping I stopped driving at night.

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