Well Ive recently finished up swapping an OM617 turbo into my toyota pickup and have still not quite figured out how to adapt the factory toyota tachometer to the diesel. I am thinking of using this http://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=128/prd128.htm with one of there flywheel sensor sending units but I need to know if it will work off of the crank positioning sensor. Does anyone know if this will work? My other thought was possibly adding a W terminal to the alternator and using the same adapter. Does anyone have any other ideas?
Heres a link to the build thread
http://www.superturbodiesel.com/std/showthread.php?tid=2455

I would try touse one of those alternator tach's. Benz uses a crank sensor with a amp.

I would try touse one of those alternator tach's. Benz uses a crank sensor with a amp.

Ya but I'm wanting to make the factory tach work I dont want to have an aftermarket one when theres one in my cluster already and I dont really have any room for more gauges anyways

my 1981 300d doent have a tach. but i get wanting to use it since you have the spot for it.

my 1981 300d doent have a tach. but i get wanting to use it since you have the spot for it.

ya its gotta be possible somehow just have to figure everything out

I did this -

http://i712.photobucket.com/albums/ww122/truckman1966/toyotacluster.jpg

MB tach in non-SR5 81 cluster

Came across this tach signal setup, thought It would help.


http://i41.photobucket.com/albums/e287/mr_manny/tach.jpg


Believe he was running his original jeep tach.

http://youtu.be/tY4am--s7KE

is there a build thread or anything for that or do you know what kind of sending unit that is?

no build thread...will give him a call.

fyi,
I did find the following on fleebay :p

http://www.auctiva.com/hostedimages/showimage.aspx?gid=337255&image=467194920&images=467194818,467194869,467194920,467194960&formats=0,0,0,0&format=0