Below is a link to a company that I have orded a tach for my 240D from. The transducer mounts to any injector line and comes with 8 feet of connecting wire. The reading unit is 1.5 inch by 3 inches.
Tiny Tach
Engine RPM to 19,990.
Correct reading regardless of the number of cylinders.
Displays RPM when engine is running.
Automatically displays run-time hours when engine is shut off (and power is still on).
A low cost method of keeping track of engine performance.
Standard wire length is 8 feet.
Accurate means of setting exact engine RPM for proper operation of diesel engines.
Requires vehicle power or external 9 volt transistor battery.
(Replace 9 volt battery only once per year.)
Has job timer and 2 service timers.

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'10 Chrysler T&C Stow-N-Go White. Grandpa's ride.

'13 Chrysler 200 Touring Candy Red. Grandma's ride.

Age and cunning will always over come youth and vigor.

Tiny tach - cool! I have a few uses for that.

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'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.

How did the tach work out for ya?

Isn't it too slow for using for shift points on a 240?

The 240D really needs a tach for info on were to cruise or where your power is at the moment, just as the 300D's.

Now for the bad news, I sold the 240D when I got the Dodge magnum and had not installed it but instead left it to the new owner to install. Last I time I spoke with the new owner Jack, I forgot to ask if he ever installed the tach.

Man I have wished several times that I had not sold that car, she was a real sweetie and I miss her.

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'10 Chrysler T&C Stow-N-Go White. Grandpa's ride.

'13 Chrysler 200 Touring Candy Red. Grandma's ride.

Age and cunning will always over come youth and vigor.

Nice to see you are still out there, OldNavy.

Ever consider getting another MB? I'd like to get a stablemate for my 240D some day, but my garage is only so big, and the wife's car has to go in it.

- Patrick

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1982 240D. 198k, Marine Blue/Blue, 4 Speed, Crank Windows, No Sunroof, No Rust, No Oil Leaks
2001 TDI. 197k, Lagoon Blue/Black, 5 speed, Chip, G60/VR6

He'll be getting one.....he hasn't gotten over the infatuation yet...

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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Yes, every day. But it will probably be a MB 3L V6 turbo diesel with a cheap a$$ Dodge body slung on top.

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'10 Chrysler T&C Stow-N-Go White. Grandpa's ride.

'13 Chrysler 200 Touring Candy Red. Grandma's ride.

Age and cunning will always over come youth and vigor.

Anyone notice it updates only once every 2.5 seconds? How annoying would that be?

Nice looking ride.

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'10 Chrysler T&C Stow-N-Go White. Grandpa's ride.

'13 Chrysler 200 Touring Candy Red. Grandma's ride.

Age and cunning will always over come youth and vigor.