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Distributor connections and tacho

Posted: Wed Jan 19, 2022 1:33 pm
by woodypup59
We've had a car arrive at the workshop as a non-runner with this electronic distributor which has two connections - a pink and an orangy brown.

Which is permanent +12v and which is the switched side of the coil ?

The car has this tacho fitted. The sensing loop is in the white wire between the ignition switch and the coil.

Is that right ? I'd have thought the tacho sense would be between the coil and distributor - or is it something to withe the electronic dissy.

The owner says it has worked like this but I'm skeptical and don't want to let the smoke out.

Its a 1275 A+.

Re: Distributor connections and tacho

Posted: Wed Jan 19, 2022 1:36 pm
by GraemeC
Does this description of the module help?
http://www.minispares.com/product/Class ... o%20search

Re: Distributor connections and tacho

Posted: Wed Jan 19, 2022 2:42 pm
by EMOKID
Hoping this link works - may help you and some others.

Re: Distributor connections and tacho

Posted: Wed Jan 19, 2022 2:43 pm
by EMOKID

Re: Distributor connections and tacho

Posted: Wed Jan 19, 2022 2:45 pm
by Dr.Mabo
The tacho was / is connecet correct in the was you mention it. To make it more clear, have a look on the SMITHS diagram for the tacho.
smiths_tacho_2.jpg

Re: Distributor connections and tacho

Posted: Wed Jan 19, 2022 4:40 pm
by woodypup59
Thnaks Dr Mabo - that confirms the tacho wiring.

Can anyone confirm the electronic dissy connections ?

Re: Distributor connections and tacho

Posted: Wed Jan 19, 2022 4:41 pm
by GraemeC
Does my post not?

Re: Distributor connections and tacho

Posted: Wed Jan 19, 2022 5:18 pm
by woodypup59
I'm afraid not because we don't have white and white / black wires.

I was hoping someone might recognise the pink and orangey brown wires.

Re: Distributor connections and tacho

Posted: Wed Jan 19, 2022 5:47 pm
by GraemeC
But it tells you which pin is which - just trace or multimeter your wires out.


Normally in Minis pink is a resistive +ve and brown is a permanent unfused +ve so it may be that your wiring isn't original

Re: Distributor connections and tacho

Posted: Wed Jan 19, 2022 6:28 pm
by woodypup59
OK thanks for that. The whole car is a hybrid / mixture of parts, which makes it difficult to trouble-shoot.

Unfortunately the M/S description " .. ignition module fitted to all standard electronic ignition distributors (non injection) looking at the front of module, negative is on the left. positive on right ... " is ambiguous.

What does looking at the front of the module mean I wonder ?

I might nip dowm to Potters Bar and see if I can examine one of the leads YMV10064

Re: Distributor connections and tacho

Posted: Wed Jan 19, 2022 9:01 pm
by iain1967s
That tacho is an RVI. It is unlikely to work correctly with an electronic ignition.

But you can get it converted at spiyda to RVC.

https://spiyda.com/smiths-rvi-rvc-conversion-board.html

Re: Distributor connections and tacho

Posted: Wed Jan 19, 2022 10:36 pm
by Hipwell
Distributor wiring for the DAB 118 type amplifier (Which work really well)

http://www.cosmoselectric.com/Prodetail ... lNub=10261

http://en.gasgoo.com/showroom/sxboyi201 ... 11535.html

The centre pin doesn't need to be connected, needs to be negative earth. Just a wire to either side of the coil. You want a DLB 198 coil with no ballast resistor.

Re: Distributor connections and tacho

Posted: Thu Jan 20, 2022 6:58 am
by woodypup no 2
Fantastic. Thanks all.