Wanted: LCD clock

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electrokid
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Post by electrokid »

Yep... you're not wrong :-) :oops: there are indeed 4 connections - I missed one.

The 3 are as described - there is another one from the sidelights - this causes the bulb to dim so it doesn't blind you at night.

Get a meter or test bulb and connect one side to a part of the car's bodywork.
Switch on ignition and sidelights.
Probe all 4 connections with the other end of the test bulb or meter.

The connection that doesn't read 12v or cause the test bulb to light is ground / 0v.

Switch off the sidelights and re-check - the connection that was 12v before and is now dead is the sidelight connection.

Switch off the ignition and re-check - the connection that has just gone from 12v to zero is the ignition.

And the one that is still 12v is the permanent 12v from the battery (and is routed via fuse 8 according to the drawing).

Hope that helps.
1992 BX19 TGD estate 228K Rusty - SORNed
2002 C5 HDi SX estate
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electrokid
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Post by electrokid »

i do that to LCD's on multi meters most days of the week
You've probably already thought of / done it - but you could put any old LCD glass onto the unit with a zebra strip to see if anything happens - they all run on 2v ish ac so at least that would check that the drives are ok ?
1992 BX19 TGD estate 228K Rusty - SORNed
2002 C5 HDi SX estate
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KevR
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Post by KevR »

electrokid wrote:
Hope that helps.
It does - thanks!
Now just got to find another clock, as I've already promised to send the two I've found so far!
1990 BX TZD Estate ('the grey one', 1991 BX TZD Estate ('the white one'), 1982 2CV6 Charleston (in bits), 1972 AZU Serie B (2CV van), 1974 HY72 Camper, 1990 Land Rover 110 diesel LWB, 1957 Mobylette AV76, 1992 Ducati 400SS, 1966 VW Beetle, 1990 Mazda MX-5, 1996 Peugeot 106D, 1974 JCB 2D MkII, 1997 BMW R1100RS, 1987 Suzuki GSX-R1100, 1978 Honda CX500A, 1965 Motobecane Cady, 1988 Honda Bros/Africa Twin, 1963 Massey Ferguson 825, and a lot of bicycles!
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electrokid
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Location: Woking

Post by electrokid »

It does - thanks!
My pleasure :-)
1992 BX19 TGD estate 228K Rusty - SORNed
2002 C5 HDi SX estate
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