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 Post subject: Tacho wiring - help..
PostPosted: Fri Apr 17, 2009 11:09 am 
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848cc
848cc

Joined: Tue Oct 21, 2008 2:57 pm
Posts: 6
Location: Narooma
Hi there,

I am restoring a 75ClubmanS. This car did have the clock in it but I have been given a tacho to replace the clock with.
I have had the instruments out and seen the white wire sitting there (which is joined with male-female bullet connection). However the lugs on the back of my tacho do not seem to explain themselves as to how I should wire it up.
I don't want to risk wiring it up the wrong way and stuff the tacho.
Below are some pictures of my tacho, I was hoping that someone might be able to assist me as to what goes where (I have labeled the lugs on the tacho A, B and C).
Thanks

Image

Image

Image

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 Post subject:
PostPosted: Fri Apr 17, 2009 12:20 pm 
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SooperDooperMiniCooper ExpertEngineering
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Location: Under the bonnet son!
From memory, the pin A was for the dizzy signal. Wire to the -ve terminal on the ignition coil. That leaves B and C for the +ve and -ve terminals....just gotta work out which is which....

D is the instrument light. Wire +ve and -ve to one side and the other.

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PostPosted: Sat Apr 18, 2009 7:25 am 
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848cc
848cc

Joined: Tue Oct 21, 2008 2:57 pm
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Location: Narooma
Mick wrote:
From memory, the pin A was for the dizzy signal. Wire to the -ve terminal on the ignition coil. That leaves B and C for the +ve and -ve terminals....just gotta work out which is which....

D is the instrument light. Wire +ve and -ve to one side and the other.


I'll give that a go thanks Mick, I think the terminal 'C' is the earth as it lines up with the printed circuit.

Does anyone know if I can fry the thing by putting the wrong wires on for a second?

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PostPosted: Sat Apr 18, 2009 9:20 am 
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SooperDooperMiniCooper ExpertEngineering
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Location: Under the bonnet son!
I reckon you're right, that's the main earth going around the printed circuit.

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SooperDooperMiniCooperExpertEngineering

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PostPosted: Sat Apr 18, 2009 7:35 pm 
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848cc
848cc

Joined: Tue Oct 21, 2008 2:57 pm
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Location: Narooma
Yep that was it, all working.
thanks

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