1972 mercury 80hp 800 thunderbolt tachometer

[martinezalfo]

Hi, I have a tachometer which I dont know if its compatible with my outboard (here is a pic of the back side) can I use this tach on my 1972 mercury 800 thunderbolt, what should I dial it too on the pulses cyl dial, it has a 2p-4c,4p-6c,4p-8c,5p and a 6p,hope someone can help,Thanks.

 

[haventaclue]

Can't see a pic. 6P is the setting,take the brown wire from the switch box,connect it to the rectifier,one of the yellow/red stripe wires from the stator, if it hasn't already been done

 

[martinezalfo]

Here is the pic of the tach

 

[fastjeff]

Use the "6P" setting and take your input off either of the yellow wires coming out of the stator.

Jeff

 

[martinezalfo]

Thanks a bunch fast jeff and haventaclue,you guys really helped me out!