Doesn't the 107 have room somewhere for a D-Jet ECU from the early days? Those things are far from small.

Sixto
87 300D

It appears that the 380SL has the KE-Jetronic system and there is a controller allegedly under the floorboards on the passenger side somewhere. I'll have to start tearing into it and see what I can find.

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Current Stable

• 380SL (diesel)
• Corvette C5
• Manx
• Baja Bug
• F350 Powerstroke
• Auburn Boattail Speedster replica

Iam thinking if you are using the 300D 85 engine, and you install the "control unit #80", then the tach will work. you also have to use the pick up sensor that picks up the signal from the flywheel.

Maybe that won`t work with the SL gauges, and the 123 tach probably won`t fit into the cluster anyway. just a thought.

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

That's my understanding too. From what I can tell, all tachs appear to be the same, just a simple analog gauge. They can be driven by a tach amplifier, an ECU or other controller with pickups coming from a number of sources as well - but in the end it's just a voltage change that drives the gauge. There are quite a few threads on that topic. I guess we'll find out for sure soon enough.

In the wiring diagram (a) pin 25 goes to the tach.



For a bit, it looked like I could just grab a section of the wiring harness with all the sensors of the ECU and pull it through intact, but alas, no such luck. So the plan now is to cut the ECU plug and manually splice in the wiring for the respective components. There are really only 4 (plus the overvoltage relay and the trimming plug, and they are right next to the ECU and can probably be left intact) And two of those are one wire only. The trick is going to be to find an equivalent place to tap in for power analogous to circuits 15 and 30 on the 300D.

Attached Thumbnails

 

__________________
Current Stable

• 380SL (diesel)
• Corvette C5
• Manx
• Baja Bug
• F350 Powerstroke
• Auburn Boattail Speedster replica