General Tech Engine Speed Reference Hall Effect Mounting Point - Need Advice

[angelfj1]

Hello! Has anyone installed a replacement speedo that requires an engine speed reference pulse.
My new speedometer (Marshall Instruments) requires an engine speed reference pulse. I bought a Hall-Effect sensor
on Amazon and need ideas for where to mount it. I was thinking somewhere near the crankshaft pulley or even the water pump or alternator
pulley. Would appreciate your thoughts on this.Thanks

Hall Effect Sensor: https://www.amazon.com/dp/B0CKT1HDV9?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

Speedo: > 5 Inch In-Dash Speedometer (2254), 0-160 MPH, Full Sweep Electric <

 

[Gerald_Gordon]

Although your proposed locations for a Hall-effect sensor would be correct for use with a tachometer, a speedometer would need a signal from the rotating driveshaft.

 

[angelfj1]

Although your proposed locations for a Hall-effect sensor would be correct for use with a tachometer, a speedometer would need a signal from the rotating driveshaft.

Thank you Gerald.