wiring tacho

[Dave_EH]

can somone help me with wiring in a tacho?

It is a Smiths tacho from the mid sixties

It has:

2 thick white wires

1 red

1 black

1 green

1 red & white

On the back near a brown wire it says 8 cyl

near a blue wire it says 4 & 6 cyl

I'm guessing red and white is the light, black is earth

The white leads have a male connector on one and a female on the other.

Regards
Dave

[craiga]

Dave,

I did a metasearch on this for you and came up with these results:

green = switched live (10 - 18 volts)
black = earth
red&white = illumination

But does it look like this

[Dave_EH]

Craig,

The face is similar but the tacho is larger and has its own housing

face is 2.5inch diam, unit is 4inches deep - so it would sit on the steering column or somewhere else like a large modern tacho.

I think that article covers the wiring in enough detail though.

I'll try and get a photo up - its quite a cool looking old tacho - Dad had it in his 66 mini back in the day.

I'm not sure how the 4,6,8 cylinder markings on the back work or whether it is interchangable yet

Cheers
Dave