Whats the best way to wire a tach on a CBR 600 f4i engine without having the stock instrament dash..
Whats the best way to wire a tach on a CBR 600 f4i engine without having the stock instrament dash..
Whats the best way to wire a tach on a CBR 600 f4i engine without having the stock instrament dash..
Find the Tach wire from the stock ecu and hook it up...assuming you have the stock ecu.
University of Saskatchewan
Old balls memeber
Didn't get any results doing that. I had assumed that would be the best way to do it.
Something isn't right then. The Honda ECU outputs a signal that is compatible with most tachs.
You may have an input impedance mismatch between the tach and the ECU. Try looking at the tach signal with a scope with the tach connected and not connected. You should see a +Vbatt square wave with the tach connected to the ECU. If it is less than Vbatt, the tach is pulling the ECU signal down.
Brian Lewis
Performance Electronics, Ltd.
www.pe-ltd.com
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Engine Management Systems