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speedo problem
71dub - August 14th, 2016 at 06:41 PM

Hi guys have fitted a new speedo to my 1971 vw beetle everything is working except the gen light and oil light . both were working on the old speedo be fore the change also when car started the indicator light glows dimly all the time .i have checked and don't seem to have any wires that i have missed .pictures of speedo attached any help would be greatfull


Bizarre - August 14th, 2016 at 07:16 PM

i would be checking the earth (brown wire)


AA003 - August 14th, 2016 at 07:23 PM

There is no earth on the generator or oil light.

Check for power on the black + from the ignition switch. This is common to both lights.


Bizarre - August 14th, 2016 at 07:32 PM

isnt the speedo earthed somehow?

L bugs were different from memory


AA003 - August 14th, 2016 at 07:51 PM

Generator light is earthed through the generator and the oil light is earthed through the oil pressure switch.

The earth on the speedo is for the high beam light, the fuel gauge and the illumination only.


68AutoBug - August 14th, 2016 at 08:29 PM

Quote:
Originally posted by 71dub
Hi guys have fitted a new speedo to my 1971 vw beetle everything is working except the gen light and oil light . both were working on the old speedo be fore the change also when car started the indicator light glows dimly all the time .i have checked and don't seem to have any wires that i have missed .pictures of speedo attached any help would be greatfull


The wire right at the bottom is live when the ignition is turned On...
pull the terminal on & off a few times to clean the terminals...
The Oil light earths out from the oil pressure sender on the engine...
[the oil sender is the small sender] You may need a new oil sender,,
If You have an alternator, the light Must go ON with the ignition.. and then off after You start the engine..... [alternator charging]
Do You have a generator or an Alternator...???
That is an alternator on My engine...
Generator's are smaller in diameter...


Oil sender is below the distributor...
if You take the wire off the oil sender and earth it to the engine - bare metal.. with the ignition turned ON.. the oil light should go on...
means You need a new oil sender...


LEE


71dub - August 15th, 2016 at 04:56 PM

Hi guys will check in next couple days when i have some time .Thank you


barls - August 15th, 2016 at 08:04 PM

the rheostat isn't turned all the way down is it.


psimitar - August 15th, 2016 at 10:06 PM

Indicator earths via the flasher relay IIRC.


AA003 - August 16th, 2016 at 05:45 AM

Quote:
Originally posted by barls
the rheostat isn't turned all the way down is it.


Different circuit.


71dub - August 16th, 2016 at 05:21 PM

Hi guys all fixed now found had not connect a earth wire every thing now in operation many thanks for the advise.