yes matt it feeds from the main ecu power conector up to the clock plug

 

to try this you need to make the the little resistor y-piece up first.

Then on the coilpack plug, connect the 2 wires up, one to each of the OUTSIDE wires (not the middle one!!). Then snip / disconnect the green wire from the ecu to the clocks and join the single end to the clocks!!

However this never worked on mine!!

 

nice one cheers

looks like another trip maplins tomorow then

if this does not work i will get a tacho from a mondeo or something like that and make it fit

 

does a 1.8 cvh sierra have a coilpack??

 

dont think so but i will have a look tomorow at breakers yard

 

The green wire that went to your original coil is the one that you need to connect it too (but only the half that goes on to the rev counter not the wiring going back to the ecu)

 

nice one cheers Chip

 

well that didnt work

 

Update
Went to the scrappys today and got another set of clocks and it works sort of

Its fine up to about 4k and then it fucks about

 

what clocks did you get then??

 

a set from a late sierra twin cam

i did the mod as per the msd instructions.

but still did not work i then went to maplins and got the diodes and fitted

them to pin 1 and 3 on the coil packand then off to the green wire on the multi plug at the

back of the clocks and now the rev counter works fine until 3.5k and then it drops down to 0

i think i will just have to get an after market rev counter

 

be a lot less bother than a hover

 

I know that................................

































You've just been round here!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

Yeah yeah

 

fitted a mondeo rev counter and it works

cheers for all the help/advice lads

 

Nice Job!

 

it will do for now and it was only £10 so alot less than stack etc

just got to get another cossy speedo now as i had white dials before

 

used this all last year worked fine cost less than £2

 

does that mondeo clock work without any other mods ?

 

up as i would like to know this too

 

And me,i've got the diode kit from MSD but car is tucked away till spring .

 

Matt,

Looking at doing this for me brother so he can actually get a reading up to his rev limit now what wire goes to what and is there anything needed to actually make the mondeo rev counter fit into the sierra housing?

Ta

 

I used this, got the bits from maplins




As for the wiring as you look at the back of the mondeo tacho you have 3 pins top, middle and bottom

The top pin on the tacho goes to the left pin on the ribbon cable

middle pin(the one with white tape on it) goes to the middle pin on the ribbon cable

and the bottom pin on the tacho goes to the right pin on the ribbon cable




hope that all makes sense

 

so you used the diode's and the mondeo counter to make it work properly?

 

I used a £30 tacho driver and it works perfect, with coilpack.
tabetha

 

Its not a case of the rev counter not working for my brothers car its more a case of getting a reading upto the rev limit which is now 7600 i think, the mondeo counter fit seams like a good direction to go

 

Thanks for the detailed answer Matt

Steve.

 

yeah mate you got it


no probs mate (just hoope it makes sense)

 

Does to me and as ill be fitting it to steve's car thats all that matters lol

 

Hi, Just wondering if the diode wiring will work on my car?

I have a Mk 4 escort fitted with a coil pack and a rev counter with the green (signal) wire.

Cheers.