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#1
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Anybody know how to wire up a tach?
With the bulk of the 240D 617 swap done, i am down to the little things. I have the tachometer amplifier connected to the front of the engine, and i have the gauge in the instrument cluster. Anybody know how to wire it up? I have three wires coming off the amplifier, a brown one, a black one, and a green with a black stripe. The back of the tachometer has three pins labled, W, -G, and +. Anybody know how to hook it up?
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1979 240D with a 617 turbo diesel. |
#2
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You have the wrong tach, you need one with two prongs.
The one you have is a later unit that didn't use the tach amp. Brown is ground.
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83 SD 84 CD |
#3
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As toomany MBZ mentioned, Yyou will need a 2 prong tachometer from an '82 or '83 300D. If you look on the tach port on your wheel well, you notice holes with numbers associated with them. #2 is gound and #6 is switched power and leads to the firewall. You will need to add in a wire for #3. Get the wire and plug for the back of the tachometer (instrument cluster) from the donor vehicle. The green-black wire from the tachometer plug goes to the #3 prong on the tach amp and the red-black wire is the switched power lead.
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1983 123.133 California - GreaseCar Veg System |
#4
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Awesome! thanks for the help. I will go to the junkyard and get the proper tach. This forum Rocks!
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1979 240D with a 617 turbo diesel. |
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