I went to a junkyard this last weekend and scammed a tachometer/clock assy out of a 1987 300D Turbo. I am looking to retrofit it into my 300D Non-turbo so I am looking to see what the two wires for the tach are driven off of. Does anybody have a wiring diagram for the 87 300D that would show where the two tach leads run?

Thanks

Kurt Kiefer

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2003 Dodge Ram 2500 Cummins - Georend fully built trans, Banks Big Hoss Bundle, Smarty Tuner, 5" turbo back exhaust. 500 HP and 1100 ft/lbs to the ground.
1979 Mercedes-Benz 300CD - Lost to a four car pile up on 275, Thank You Michigan Drivers.
1986 Mercedes-Benz 300D - Sold, Euro non-turbo car.

frickin whoops - didn't see that you had a Euro-car...

On the W123 bodies (not much help), the two pins are +12v and signal from the tach amp.

-John

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2009 Kia Sedona
2009 Honda Odyssey EX-L
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Husband, Father, sometimes friend =)

I think the cluster from an 87 is physically different and the tach/clock combo is also different than one from a W123 300D (clock reset in different location). Not sure if it pays to pursue it any further.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

My 86 is a euro 124, same as the 87 stateside. If there is an amp this could be a little harder than I was hoping.

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2003 Dodge Ram 2500 Cummins - Georend fully built trans, Banks Big Hoss Bundle, Smarty Tuner, 5" turbo back exhaust. 500 HP and 1100 ft/lbs to the ground.
1979 Mercedes-Benz 300CD - Lost to a four car pile up on 275, Thank You Michigan Drivers.
1986 Mercedes-Benz 300D - Sold, Euro non-turbo car.

It'll physically fit then, all you need is to have a magnetic pickup that senses 1 per rev of the flywheel and a tach amp in between, wire up signal in/out to the tach and power and that should be it.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked