Vehicle & Technical > Discovery

Discovery lights-on warning buzzer

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pritch:
Yesterday, I found out to my expense that my Disco doesn't have a lights-on buzzer.  Well, I knew that already, but this time, there was no-one about at work to point out that I'd left the lights on.  I also found out how difficult it is finding another vehicle that can jump start a diesel.  

So, I went to Maplin today, and I've fitted a lights on buzzer, which was really quite astonishingly easy.  Hopefully someone else will find this useful.

On a pre-94 Disco, all you need to do is:

Connect the positive side of the buzzer to something that becomes live when your lights are on.  I used the red and black wire that illuminates the cigarette lighter socket.

Connect the negative side of the buzzer to a diode.  This needs to go the right way around, so that the stripe on the diode points away from the buzzer.

The diode then needs to be connected into the driver's door switch, either directly into the back of the switch body, or by splicing into the Blue and Purple wire that runs to it.  This can be easily found by pulling the door seal off adjacent to the switch.  A previous owner had bodged an alarm fitting in here anyway, so I already had a nice handy place to connect to.

I used:

1x BY127 rectifier diode, order code QF42V (19p)
1x Miniature buzzer, order code FL40T (99p)

£1.18, and five minutes work.  Job's a good 'un.

Wanderer:
Excellent stuff Huw.
I like it.

Ed

hobbit:
Yes Huw, very handy, that product has been on sale with them for years, but is still worth fitting

Luckily up to now not had need for 1 but always in the back of the mind, have fitted them to numerous vehicles, incidentally, they used to do a interior light delay unit too, I believe someone was talking about this on another thread

Kev

pritch:

--- Quote from: "Hobbit874" ---Yes Huw, very handy, that product has been on sale with them for years, but is still worth fitting

Luckily up to now not had need for 1 but always in the back of the mind, have fitted them to numerous vehicles, incidentally, they used to do a interior light delay unit too, I believe someone was talking about this on another thread

Kev
--- End quote ---


Just to clarify, Kev, this isn't actually the £7.99 kit they sell, this is a home-brew tight-wad version  :wink:

hobbit:
Must not write posts after 10pm, the brain does not always engage on all levels  :oops:  :?  :?

Nice one though, been to Veh  product wiring today they got a one in there for £6.19, this one buzzes when door opened and lights still on

It just shows you what can be done with a little knowledge, and common sense. Save you £££ in some cases

Keep the tips coming in.

Kev

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