I've just bought a S/H VDO 3" tacho.

It's got no fitting instructions with it.

On the back is this:
5 little switches with each switch numbered from 1-5 with the word, "open" above the 5 numbers.
It also has 4 contacts below, with +, HI, LO and and an 'earth' symbol.
Can anyone help with these clues?
Regards,
Mark:thumb

For a 4 cylinder VW, the number two switch on the back should be down, all others, up.
+ to 12 volt positive terminal controlled by ignition switch

HI To negative terminal of ignition coil

LO not utilised

last terminal to negative (earth)

Hope this is what you need.
Rob.......

Thanks Robo, it's now working OK.
Mark:thumb