speedo problem

71dub Officially Full-On Dubber

361 posts · joined Sep 2008 · 14 Aug 2016, 6:41 pm

#1029016

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

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Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 · 14 Aug 2016, 7:16 pm

#1029017

i would be checking the earth (brown wire)

Futue te ipsum!!!

AA003 Custom Title Time!

1,189 posts · joined Oct 2011 · 14 Aug 2016, 7:23 pm

#1029019

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.

I read it on samba, so it must be correct.

Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 · 14 Aug 2016, 7:32 pm

#1029020

isnt the speedo earthed somehow?

L bugs were different from memory

Futue te ipsum!!!

AA003 Custom Title Time!

1,189 posts · joined Oct 2011 · 14 Aug 2016, 7:51 pm

#1029022

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.

I read it on samba, so it must be correct.

Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 · 14 Aug 2016, 8:29 pm

#1029023

71dub wrote: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

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- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

71dub Officially Full-On Dubber

361 posts · joined Sep 2008 · 15 Aug 2016, 4:56 pm

#1029038

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

barls Administrator Causer of Chaos and Mayhem

9,473 posts · joined Jun 2004 · 15 Aug 2016, 8:04 pm

#1029046

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

“We all pay for life with death, so everything in between should be free.” Bill Hicks
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psimitar Son of Jim - Creator of Good

2,506 posts · joined Jan 2009 · 15 Aug 2016, 10:06 pm

#1029051

Indicator earths via the flasher relay IIRC.

madness is in the eye of the beholder 👍

AA003 Custom Title Time!

1,189 posts · joined Oct 2011 · 16 Aug 2016, 5:45 am

#1029058

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

Different circuit.

I read it on samba, so it must be correct.

Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂

71dub Officially Full-On Dubber

361 posts · joined Sep 2008 · 16 Aug 2016, 5:21 pm

#1029072

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