VP 5.7 GXI Tachometer Sending unit

Berkley1

Petty Officer 2nd Class
Joined
Jun 21, 2024
Messages
105
Trying to locate where the tach sending unit is located on the engine?
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
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Jul 23, 2011
Messages
50,224
the tach is connected to the coil. the ignition firing the coil is what sends the signal to the tach. hint: its the grey wire
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
50,224
most tachs run off the coil

unless they are networked gauges, then they run off the CAN backbone
 
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