O

ohowson

Member
Firstly, let's not worry about the 'do you need one' argument, I do.
I know a few people have done this - I have an analogue tachograph to fit to my 04 disco 2.
There are some grounds, a permanent live and an ignition live - I reckon I can manage that lot from the body and fuse box. What I'm not sure about is:

a) I need to tap a wire that's live only when the lights are on - is there an easily accessible one?
b) I need to tap a signal from the ODB - does anyone know *which* ODB wire that is likely to be?

Then I need to figure out where it's going...
 
ohowson said:
Firstly, let's not worry about the 'do you need one' argument, I do.
I know a few people have done this - I have an analogue tachograph to fit to my 04 disco 2.
There are some grounds, a permanent live and an ignition live - I reckon I can manage that lot from the body and fuse box. What I'm not sure about is:

a) I need to tap a wire that's live only when the lights are on - is there an easily accessible one?
b) I need to tap a signal from the ODB - does anyone know *which* ODB wire that is likely to be?

Then I need to figure out where it's going...
Click to expand...
Christ. I have enough trouble fitting a radio.

Col
 
ohowson said:
Firstly, let's not worry about the 'do you need one' argument, I do.
I know a few people have done this - I have an analogue tachograph to fit to my 04 disco 2.
There are some grounds, a permanent live and an ignition live - I reckon I can manage that lot from the body and fuse box. What I'm not sure about is:

a) I need to tap a wire that's live only when the lights are on - is there an easily accessible one?
b) I need to tap a signal from the ODB - does anyone know *which* ODB wire that is likely to be?

Then I need to figure out where it's going...
Click to expand...

Most of the places that supply them will talk you through the fitting process. vdotachograph.co.uk would be one example.
:)
 
Beneagles said:
Most of the places that supply them will talk you through the fitting process. vdotachograph.co.uk would be one example.
:)
Click to expand...
Yes indeed - whch is why I know there's a wire that needs to be connected to the ODB - but I've spent so long on the phone to him already I'm hoping someone 'just knows' :)
 
Well I've not been out to check but a bit of casual googling suggests it does, as does the chap I bought the tachograph from.
 
ohowson said:
tfft. still don't know which wire though - he's only in Coventry I might just take it up and get him to do it!
Click to expand...
If it comes on an OBD2 style plug then you could just stick it in, but if it has to be permanently wired in then you deffo need to know which one.
Thort they had to be fitted at an official place anyway.:(:(:(
 
It's just a signal wire.
As it's < early 06 you can self-fit an analogue one. They can be fitted anywhere as long as you have an LED that indicates it's on. I'm actually thinking of putting it in the otherwise bloody useless door pocket if I can get the wires to flex nicely.
 
ohowson said:
It's just a signal wire.
As it's < early 06 you can self-fit an analogue one. They can be fitted anywhere as long as you have an LED that indicates it's on. I'm actually thinking of putting it in the otherwise bloody useless door pocket if I can get the wires to flex nicely.
Click to expand...

(and truth be told I specifically bought an older vehicles because the price of a modern digital tachograph + fitting + calibration is likely to set you back best part of 2 grand - which for something I'll probably do a couple of dozen times a year was just not worth it.
 
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