Author Topic: Changed clocks - no dash/switch lights -what have I done?  (Read 1849 times)

Offline jezza16v

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Hi, changed twin plug clocks on an '89 digi a couple of days ago to solve a rev counter/buzzer issue.......that' fixed......but.....
now the fuel gauge does not work and we have no dash or switch lighting at all ?  :undecided:
Any ideas as to what we've screwed up?

Offline rubjonny

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Re: Changed clocks - no dash/switch lights -what have I done?
« Reply #1 on: 24 July 2009, 14:49 »
check fuse #20, and see if your numberplate lights still work!

fuel gauge is probably unrelated, perhaps its broken in the replacement clocks :(
Hello my name is John and I'm a dub addict.

Offline jezza16v

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Re: Changed clocks - no dash/switch lights -what have I done?
« Reply #2 on: 24 July 2009, 15:23 »
Ah.....fuse 20? I looked in the fusebox guide but does not mention dash lights on fuse 20......will check pronto. Thanks again.
I've dismanteld the old clocks (just out of interest) and it looks like the old fuel gauge will swap in easily enough, I bet the problem is on the printed circuit rather than the gauge though.........pic attached for no particular reason.........


Offline rubjonny

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Re: Changed clocks - no dash/switch lights -what have I done?
« Reply #3 on: 24 July 2009, 15:30 »
yeah wont be hard if you can strip em down like that, also worth checking the nuts that hold the gauge to the pcb are there as this is where the electrical connection is made
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Offline jezza16v

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Re: Changed clocks - no dash/switch lights -what have I done?
« Reply #4 on: 24 July 2009, 18:40 »
Checked fuse 20, its OK and the number plate light is working. We took the old Blaupunkt radio out as well and theres a wire free in the hole now which is getting a variable voltage when adjusting the rheostat on the h'light switch so I guess the switch is OK........is there an earth behind the dash that we might have dislodged I wonder?

Offline weazgti

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Re: Changed clocks - no dash/switch lights -what have I done?
« Reply #5 on: 25 July 2009, 10:39 »
i had same prob found out one of the wires in the back of the headlight switch had slightly come out causing me to have no dash lights did my head in trying to find out wot was causing it

Offline rubjonny

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Re: Changed clocks - no dash/switch lights -what have I done?
« Reply #6 on: 27 July 2009, 08:35 »
the fact that wire is getting 12v suggests all your bulbs have blown! this wire is connected to the same feed as all the other bulbs. check at each switch for variable voltage, the wire will be blue/grey :)
Hello my name is John and I'm a dub addict.

Offline jezza16v

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Re: Changed clocks - no dash/switch lights -what have I done?
« Reply #7 on: 27 July 2009, 11:30 »
 :shocked:  Thanks, will investigate and report in due course................

Offline jezza16v

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Re: Changed clocks - no dash/switch lights -what have I done?
« Reply #8 on: 01 August 2009, 07:01 »
Swapped the clocks again for some 16v ones last night and its all OK now. 'all dash lights out' was mis-communication, was all 'clock lights' out........yes RJ all three bulbs were blown, that'll teach us to check first...........doh!   :embarassed:  Two out of the three were blown in the new ones too, thought the fuel gauge was knackered in the new one as well at first and pulled all the fuse box out etc looking for dodgy wiring..........turns out the git had let it run so low there was no so**ing fuel in it, popped my gallon of mower fuel in it.....and hey... we're in the red  :embarassed:. Thank f*** for that! Moral of the story, if you're changing clocks, check all the bulbs first & make sure there's some fuel in it.
BTW, I put a 9v battery directly across fuel gauge terminals of the dodgy clocks, turns out it was OK but feeding it from the plug socket it would not work, I notice there is a 'nick' in the blue printed circuit which is probably the fault.

Offline tony_ack

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Re: Changed clocks - no dash/switch lights -what have I done?
« Reply #9 on: 01 August 2009, 15:45 »
all three bulbs were blown, that'll teach us to check first...........doh!   :embarassed: 

I learnt that the hard way too!
1992 VW Golf MK2 GTI
1995 VW Corrado VR6