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Old 11-18-2021, 04:52 PM
ngoma ngoma is offline
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Join Date: Nov 2009
Posts: 1,177
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The tach wants the "W" terminal on the alternator. Do any of those have a W terminal?

Otherwise, you could add the W terminal with a little surgery:
Gas Tacho / Revcounter Conversion to Diesel W terminal

And there are YT videos showing how.

I ended up having my bad alternator rebuilt at a local starter/alternator (in-house) rebuild shop. PIA to deal with the know-it-all grumpy guy but he did a good job.
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1985 744 gle d24t
1985 745 gle d24t
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