Tach sending unit -Score !!-

[G. Mann]

Went to the local truck wrecking yard today to try to find an injector line. I've got one that is leaking at the injector. Found a "parts" engine and picked up the right line. While I was doing that, discovered the "parts" engine had a tach sending unit with the wires in good shape and about 3 ft of the two wires that go to the cab still attached. Dismantler clipped it with *****. One green wire, one black wire. I pulled it and bought it.. $5 ...

Ok,, now the question. What tach will work with this sending unit? Which wire is which for signal.. and who has done one before?

Thanks,

 

[towcat]

those are "supposedly" for the factory tach. the autometer tach functions on the same general principle but I have yet to test the theory.

 

[sassyrel]

g mann--diesel tach only--gas wont work--been there---ask that yard where the truck is--and just get that dash--put it in--the wires are already in the loom---and away you go---

 

[G. Mann]

sassyrel.. already ask that question.. the engine came in as a core exchange to the yard.. truck is somewhere else, or gone by now. Next idea please?
Been looking for a year for a donor truck with a tach dash. Are these rare as hens teeth or what?
Looks like aftermarket tach for me.. diesel of course... any suggestions?

 

[yARIC008]

ebay, that's where i got mine.

 

[Diesel Fly]

Read this thread...

http://www.oilburners.net/forums/showthread.php?t=17833

 

[84TD]

there is one on ebay but they want a premium for it!!!! saw it a few days ago, i think the BIN was 175???

 

[GenLightening]

What year truck do you have? I may pull the dash out of my donor '90 truck.

 

[G. Mann]

How many teeth on the IP gear?

I've located a nice tach but I need to know how many teeth the IP gear has to see if it's within the range of the pickup for this tach.

Anybody got a gear laying around they can count the teeth on and let me know?

Thanks,

 

[Diesel JD]

I want to say it has 38 since we count to 19 using Ziggs method to find the correct gear timing when we have jumped a tooth. Someone should be able to tell you for sure if that is accurate. Maybe Zigg... a lot of the guys are without internet at the IDI rally.