tachometer not working

[joey car]

motor runs but no tach...... any advise on how and what to check ,   thanks   J.C.

[joey car]

COME ON !!!!!!!I know someone here has the info, 

[TZR-V4]

OK I've you check the signal on orange wire.

On 1KT or 2MA should be -200volts pulses.

Olivier.

[joey car]

wires to my tach are blk.=ground    gray=??  brown=???

[TZR-V4]

OK

so Brown should be 12v (between brown and black)

Gray is similar to Orange 2MA.

Check the color of primary ignition coil should be gray too.

Resistor measured between tacho gray and coil "gray" (coil unplunged from the wiring harness) should be 0 Ohms.

This could be confirmed looking at the wiring diagram.

Olivier.
 

[joey car]

thanks,,, i'll check it tomorrow

[joey car]

cleaned connections , tach now working.....

[ash33]

Glad the problem is solved moving thread to the 2MA tech section, so other can find the info.