Sharing is caring! This forum and the members have given me plenty of help and info. Its a no brainer giving back.
I also investigated using a VN/VP tacho but found that chip and design where dedicated to the scaling of that tacho.
It wasn't as flexible as the VR/VS tacho design.
You also cant use VX/VT tacho because that is cluster on board, fully electronic and runs completely off the ECUs.
I have updated the PDF with bench testing info, needle weights, some corrections and a cover page.
Cheers.
Edited by fuzzypumper, 16 October 2017 - 08:26 PM.