Gents, looking for a sanity check here. Installing Smith Flight/Prism Electronic Speedo and Tacho' in the BV8 conversion [TVR 4.0 with 14CUX]. The tacho' needs input from -Ve side of coil as per norm'. However, the ECU also has a link from the coil to pin39/white black wire :.
Q? does the 14CUX ECU need the coil signal to operate fully...or, can I ignore the ECU wire and just connect -Ve coil to tacho?
And depending upon answer, I'll ask why...?
Smiths Flight Electronic Tachometer
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