VK Cluster

[mrPhilsVK]

hi all!

Well i bought a 85 vk and it come with a vacuum fuel economy gauge instead of the RPM gauge. so i decided to buy a original RPM gauge from another commodore and just swap the gauges around. but I don't know about how to connect it to make it work?. or if its even possible. so please anyone that has done it or knows if its possible reply.

Thanks PHIL

 

[ajvx01]

Very possible mate.
If I'm right the manifold pressure gauges uses a hose yea? You'l need to plug that off.
Your new rpm gauge will run off a wire from the -ve of coil I assume? (Some one may need to correct me on that)

 

[mrPhilsVK]

If I'm right the manifold pressure gauges use a hose yea? Your rpm gauge will run off a wire from the -ve of coil I assume?

It doesn't seem for you to be able to put any wires to the gauge. or is there a piece that im missing from the gauge to connect the wire ??

 

[VK SL 3800]

I did the same swap, i drilled 3 small holes in the rear of my cluster then soldered a wire to each of the pins on the back of the tacho. I fed the wires through the holes and then put the cluster all back together. Then i spliced 2 wires into the original harness with some bullet pulgs in the middle so i can still unplug it all and then ran the 3rd wire to the coil.

I posted on here somewhere which pin is what but you have an earth, a 12v ignition and a signal to the coil.
Ill have a look and try to find the thread i posted it in.......

Ok so i found this thread, check it out:
http://forums.justcommodores.com.au...-1978-1985/146178-vh-tacho-pin-selection.html

 

[mrPhilsVK]

I did the same swap, i drilled 3 small holes in the rear of my cluster then soldered a wire to each of the pins on the back of the tacho. I fed the wires through the holes and then put the cluster all back together. Then i spliced 2 wires into the original harness with some bullet pulgs in the middle so i can still unplug it all and then ran the 3rd wire to the coil.

I posted on here somewhere which pin is what but you have an earth, a 12v ignition and a signal to the coil.
Ill have a look and try to find the thread i posted it in.......

Ok so i found this thread, check it out:
http://forums.justcommodores.com.au...-1978-1985/146178-vh-tacho-pin-selection.html

Yeah thanks!. I will check that out as soon as I can

 

[Lewie]

Or this one:

https://forums.justcommodores.com.au/threads/vb-vh-sl-e-dash-instrument-cluster-conversion.39693