old thread I know, but I've just bought one of these kits, and have tried wiring it it (took the speedo wire from the engine side of the firewall near the dipstick). I know it's the right wire as the speedo don't go!
Now, I'm not able to make it work, and I'm not sure if I have a dodgey solder/component or an incorrect setting. Although I thought I'd tried all of them. Can anyone offer some tips to a young player?
Thanks.