No fuel or temperature gauges & no instrument lighting

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Flat 6

Flat 6

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Me again,

On the subject of usability and winter driving, for some reason my fuel and temp gauges and my instrument lighting have all stopped working. I have warning lights for choke, engine oil pressure and full beam on the dials.

I've checked fuses and they all seem OK. I fitted a new fuel sender not that long ago and the fact that the temp gauge is also out suggests to me something shared somewhere?

Any thoughts before I start pulling the instrument pod apart?

Cheers,

Al
 
Yep, there is a dash lighting switch which isn't switching on the dash lighting. Good place to start I guess, to check power and earth.

Earth problem could be root cause of all this but probably means taking the pod apart?

How easy is it to pop out a gauge?

Al
 
Power comes from the voltage stabiliser for temp and fuel so check if getting voltage coming out
E154E11D-00C0-4DED-A324-110CF3579C15.png
62C095AD-4571-4807-907B-925D9D6C6CB0.png
 
More likely to be a voltage problem than earth, as the gauges are earthed through the senders respectively.
 
OK, thanks all. I'll start with the stabiliser.

I see some bloke in Devon makes solid state ones - tempted to fit one anyway to replace the 50's tech that's in there at the mo.

Just need to work out the simplest way of getting the speedo out - presumably those big slot headed bolts at either side of the pod are the place to start?

Cheers,

Al
 
Yes, remove those two and the whole binnacle comes out. Should be able to probe the back of the stabiliser with a multimeter.
 
Check the round nuts are tight on the gauges as there casings are earthed through the black wires attached to the knurled nuts.
as are the earth return path for gauge lights.
 
Thanks all.

Shame I have to go to work in the morning - I now want to keep tinkering with the Landy!
 
Working on the wiring behind the pod is easier if you remove the steering wheel first and whilst your in there, it might be worth considering replacing the crappy dash bulbs for led ones.

Col
 
Easier pulling binnacle out after removing the top and btm plastic shroud around steering column , it’s restricted a lot by speedo cable and other wires so careful everything still connected when it goes back
 
I had the same problem on my 1984 109 FFR. The problem was the Earth on the Dash. I removed the 2 Gauge's and cleaned the Earths. That solved the problem. My 109 does not have a Voltage Stabilizer fitted.
Regards.
Chris.
 
Mines been like that since 1984, all Ive got is high beam indicator and glow plugs Lamp. Oh, but the dash Light itself works which is handy.
 
Flat 6 said:
OK, thanks all. I'll start with the stabiliser.

I see some bloke in Devon makes solid state ones - tempted to fit one anyway to replace the 50's tech that's in there at the mo.

Just need to work out the simplest way of getting the speedo out - presumably those big slot headed bolts at either side of the pod are the place to start?

Cheers,

Al
Click to expand...
IMG_20210905_124713.jpg

Bought mine of ebay took a load of faff to get through customs but was only a couple of quid for 2 replaced the nacked one on my 101..they are tiny though so rather than solder i pushed the long legs into the wire and heat shrunk on...
 
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