Nissan D42V5E tacho question

[Brad Foreman]

howsit.i have a nissan cefiro a31 with a RB30ET with a link D42V5E and a distributor ignition setup.my standard tacho has never worked.i was wondering if i can jump a wire from the links output to the dash? any help would be apreciated

[Jurgen Biggelaar]

Hi Brad. 

Assuming your tacho on the dash only needs a 'low level' input meaning it uses a very small voltage, it will be no problem at all.  Low level is most likely the case for you and most common by the standards in a Japanese car.  By trying it you cannot harm your tacho or ECU so don't be too concerned there. 

Seeing as you are only using 1 of the 3 ignition channels available with the distributed set up, a feature in the firmware will allow you to set ignition channel '3' as a tacho or a shift light.  The ECU IG3 wire is Blue/White and is the 4th pin along to the left of the tag on the BIG plug.

This will be wired to your tacho input wire (will only be one to this in the dash), and using a hand controller go to 'Configuration' and set IG3=Tacho.  Alternatively if you have the SerialLink to connect to the ECU with your PC, this setting is found on the main config screen labeled 'IGN3 Mode'.

See here for the manuals available - http://www.linkecu.com/support/documentation/g1-engine-management-documentation

And this will download the correct PCLink software to program the ECU - http://www.linkecu.com/support/downloads/pclink-download/PCLinkV25

Jurgen

[Brad Foreman]

aw yea chur chur.read thru all the bookwork and it said ig3 blue/white wire for tacho.i guess my link hasnt got the ig3 channel setup for tacho lol