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Model Specific Questions and Info => MK1 Golf/Jetta and B1 Dasher => Topic started by: sabatino on May 17, 2020, 04:18:39 pm

Title: tacho mk2 gti in mk1 diesel
Post by: sabatino on May 17, 2020, 04:18:39 pm
Greetings to all, I would like to change my cluster mk1 diesl I am attaching photos of the original piece
The photos are:
original cluster
original pin
(http://pics.tdiclub.com/data/500/medium/20180623_131239.jpg)
(http://pics.tdiclub.com/data/500/medium/20180623_131954.jpg)

I would like to change it with this:
(http://pics.tdiclub.com/data/500/medium/20200517_182839_2_.jpg)
(http://pics.tdiclub.com/data/500/medium/20200517_214259_1_.jpg)

can you help me with the links?
I have alternator signal w.
maybe you have photos?
has anyone made them?
Thank you all in advance
Title: Re: tacho mk2 gti in mk1 diesel
Post by: libbydiesel on May 17, 2020, 06:38:11 pm
None of your pics work.  Pictures that are hosted on TDIClub cannot be posted elsewhere. 

In order to have a tach on my Mk1, I modified a Mk1 gasser tach in order to run off the w-terminal and added that to my Mk1 cluster. 
Title: Re: tacho mk2 gti in mk1 diesel
Post by: ORCoaster on May 17, 2020, 10:23:55 pm
Libby I should work with you on the exact conversion.  I have replaced capacitors, resistors and added wire links as described in a write up I believe done here or maybe elsewhere but I still can't seem to make it work. 

One of those rainy day projects I can never seem to find on the workbench when it is indeed a rainy day. 

Like today.  I ended up converting a lamp that didn't seem to have a good ballast anymore and a replacement is NLA.  So I just put a regular socket in place of the four pin one and screwed in an LED bulb.
Title: Re: tacho mk2 gti in mk1 diesel
Post by: sabatino on May 18, 2020, 08:00:55 am
 Sorry,but to upload photos on this forum what is the procedure? Please explain to me Thank you
Title: Re: tacho mk2 gti in mk1 diesel
Post by: libbydiesel on May 18, 2020, 02:46:53 pm
Quote from: ORCoaster on May 17, 2020, 10:23:55 pm
Libby I should work with you on the exact conversion.  I have replaced capacitors, resistors and added wire links as described in a write up I believe done here or maybe elsewhere but I still can't seem to make it work.

It has been a few years since I did that to my Rabbit so the details are foggy.  If memory serves I largely followed this page although I believe the tach circuits were not exactly the same:

http://www.vwwatercooled.com.au/forums/f28/how-tachofy-your-mk-1-diesel-31515.html

I cross-referenced the circuits in this FAQ thread:

http://vwdiesel.net/forum/index.php/topic,3741.0.html

I'm afraid I don't recall better specifics than that.


Quote from: sabatino on May 18, 2020, 08:00:55 am
Sorry,but to upload photos on this forum what is the procedure? Please explain to me Thank you

http://vwdiesel.net/forum/index.php/topic,13132.0.html
Title: Re: tacho mk2 gti in mk1 diesel
Post by: sabatino on May 18, 2020, 03:00:51 pm
You're very kind
Thanks
I will try with an electronic technician
Title: Re: tacho mk2 gti in mk1 diesel
Post by: ORCoaster on May 18, 2020, 11:06:15 pm
Libby, I was following those directions.  Some confusion between diagrams and writeups but working on removing variables.  I may get it yet.  Hate to have a tach on the workbench when it does a better job in the dash cluster. 

Thanks.
Title: Re: tacho mk2 gti in mk1 diesel
Post by: fatmobile on July 20, 2020, 11:37:48 pm
  When I built mine
 I let the adjustable potentiometer hang outside the cluster.
Got it off the circuit board and  ran some long skinny wires to it.
 Otherwise it's hard to adjust.

 For the one on my '91 MK2 I drilled a hole through the front of the cluster.
Title: Re: tacho mk2 gti in mk1 diesel
Post by: ORCoaster on July 21, 2020, 12:03:05 am
With the tach in hand, I jumper wires to the battery and then to the Alternator and adjust as the engine is running and watch the Tiny Tach for guidance.