Vincez Posted May 10, 2015 Share Posted May 10, 2015 Replaced the tach on my 2001 V11 Sport with new one from Harpers. Old one would read above 5000 revs - new one had the exact same wiring and leads and slipped in easily. But, the tach now reads 4000 revs at idle (wrong!)! It seems to be 2000 revs above where it should be.do I need to recalibrate something here? It is a Veglia white face like the old one but the tach needle is orange not white. Any thoughts? Link to comment Share on other sites More sharing options...
Kiwi_Roy Posted May 11, 2015 Share Posted May 11, 2015 There is nothing to adjust on those, send it back to Harpers. You are using the stock wires? Are you sure you have the wires in the right spot? Red/Black to + Black to ground Yellow/Black (might be Yellow/Green) to - Link to comment Share on other sites More sharing options...
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