Multimeter's Connection for RPM

[ruffy]

Just got a $40 multimeter at Harbor Freight, with a tach as part of it.
For the tach it's got the pick-up sensor that attaches to wire 1, close
to the plug. Problem is, it only registers (displays) single digits and
- because it's 8 cylinders - I need multiply by 80 to calculate the RPM.

I must be doing something wrong, because numbers like 5, 7 or 9
(which translate to be 400, 560 or 720) is just no way to measure RPM!
You have to be a mental gymnast to keep calculating RPM from single
digits.

Can I use a regular set of leads and hook up next to the distributor?
I point to where I see the word "TACH" stamped (yellow arrow). Seems
that the underside of this spot is an empty slot. Is that slot for a tach?
Or do I have to intrude upon one of those 3 wires that emerge from
further back from this underside's seemingly empty slot?

 

[Chuzz]

Can't help you with that one. Didn't an instruction book come with the multi-meter?

 

[ruffy]

This China product just gives a diagram some scientist might just maybe figure out, using a 4-cylinder model. Very little else.

What about that TACH area on the distributor; How can I hook up a tach over there?

 

[zora]

As you already have noticed the Tach on the cap is for the tachometer connection + lead. I have no idea how your multimeter functions as a tachometer. Universal tachometers have an adjustment or multiple scales to switch between 4,6, and 8 cylinders.