No, that's ok, I can follow that.

I will have another play with it tonight and see if I can get the little bugger to work.

Thanks again.

Orginally 12v positive but there have been discussions in the past and the conclusion is, it will work on either pos or neg aslong as in series.

Now dumbies guide;
hmmm?
2 12v batteries. A and B
Wired in parrallel gives 12v - wiring is A pos to B pos, A neg toB neg.

2 12v batteries. A and B
Wired in series gives 24v - A pos to B neg, A neg to B pos.

Basically Series means going through one and then into the next.
Parrellel means side by side

I am sure I have made a dumbies guide confuzing

Ok, thanks.

And it is the positive side of the coil isn't it?

Another silly question, I am a little confused about the difference between in series and parrallel, is there a dummies guide?

I was hoping it was going to be a plug & play but I should have expected something to go a little adrift.

Originally its the 12v supply. So before the ballast resistor. But I dont believe it matters.
Aslong as tacho and ign are in series not parrallel

Ok, I'm still having issues with getting the tacho to work

In the end I decided to run new wires to save any confusion.

The non loop wires fron the back of the tacho I connected to the lugs on the back of the speedo and the loop wires (BW) I connected to the ignition (BW) and to the coil.

Does it go directly to the coil or should it go to the balast resistor?

Help anyone!

Hi all,

I'm in need of a little bit of help!

I was trying to install a coupe tacho into my 84 ute on the weekend (replacing the standard clock) and I came across a problem when I started looking for the wiring.

I have printed off all the previous threads on this topic so I knew I had to look for the black wire with the white tracer that is taped up in the harness and all you have to do is unplug them and plug the tacho in! Pretty simple one would think...not so!

I found the B&W wire taped up to the harness but there was only a female end there, no male in sight. Not only that but it seems that Datsun/Nissan decided to change all of the connectors in the later cars to round ones instead of flat spade type which isn't a real issue just annoying.

My issue is not knowing what wire to put where, do I plug the male connector from the tacho into the existing connector and run a new wire for the other (where do I run it to)? I know it has to be a loop arrangement so I thought having an open end to the B&W wire sitting there would have been an issue but obviously not.

Has anyone else come across this problem with one of the later utes? If so how did you fix it?

Any help/advice appreciated.

Thanks