Author: adrian

Spent the day modifying my RVI tacho as it was positive earth and they don’t like working with electronic ignition.  After a bit of research found a company that makes a board to convert the RVI tach. www.spiyda.com and it costs £42 if your wiling to install it yourself.

If you can solder a couple of wires its a relatively simple conversion, biggest challenge is getting the tacho apart due to years of rust and the bezel seal turning solid.

Movement is now converted to negative earth and calibrated so just need to find time to clean up the metal case and repaint it before I can complete the reassembly.

Spent the last few days repairing the wiring harness. This involved removing the old tape, cleaning and inspecting all the wires. Replacing the wires where necessary (the insulation on a lot of the wires in the engine bay had become brittle and crack so needed to be changed). New terminals were then crimped and soldered on before harness was tapped up again.

I also took the opportunity to do a few modifications. I’ve added wires in so I can have an electric cooling fan, electric fuel pump and adjusted the tacho wiring to work with a RVC tacho.

Boot and transmission tunnel harness are complete but as the car was disassembled I couldn’t fit main harness to confirm all wires are in correct place before taping it up.

Clamped and screwed the rear part of the shell together and started to join them back together where it cut in half to be able to remove it from the rotten chassis.

New replacement bracket fabricated to hold petrol tank in place.