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106 Posts
Discussion Starter #1

I have a problem trying to get my Alfetta tacho to work from the EDIS 4 controller.

I tried the CTO and IDM signals but no bloody good.

I read a post in a BWM forum that mentioned using a .22uf cap to filter the signal , I tried that but still NBG.

I tried the circuit mentioned in the Megasquirt manual - with the 2 diodes and the zener diode but still NBG.

Has anyone got this working?

thanks in advance

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