Tachometer doesn't work with Pertronix ignition (2 Viewers)

[SiestaTom]

I'm on my second Pertronix ignition - the points replacement kit. I've been very pleased with it, BUT my tachometer shows no reading. It worked just fine when I was running the regular points.
I contacted Pertronix and they gave me 4 possible solutions, but each required installing either a resistor, a capacitor, or a pair of diodes. That sounds like a lot of hit and miss, and ordering a lot of parts, just hoping one of those suggestions works, so I'm wondering if anyone on MUD has had this issue and worked out a solution.
thanks.

 

[1969FJ]

What type of tachometer are you using ?

 

[mrboatman]

I used to run the Pertronix on a F engine and my cheap digital tach worked fine

 

[B y r o n]

I'd double check your tach wiring, ensure it is hooked up to the right side on the coil and there are no breaks.

 

[mrboatman]

The basic tach wiring is green (signal wire) from tach to - neg side of coil an a positive (to key power source) and ground wire.

 

[FJ40Savvy]

I'm planning on doing 60 Series Tach install on my F Engine. I was going to use this wiring information as reference. Stock FJ60 Tach wiring - https://forum.ih8mud.com/threads/stock-fj60-tach-wiring.629505/

 

[Steamer]

I'm on my second Pertronix ignition

my tachometer shows no reading

It worked just fine when I was running the regular points.

Did it work with the "first" Pertronix?

 

[SiestaTom]

Thanks for all the responses. You may chuckle, but my tach is actually an old Heathkit auto analyzer that is pretty much the same age as the truck! So they should actually get along with one another.
I'm following the Heathkit instructions as to how to hook it up. However, given the age of the Heathkit, it may not be working properly. I'll hook it up to my 2000 Tacoma and see if it works with that. And I'll check all my wiring and report back.

 

[firemanj92]

For simplicity sake, I bought a programable, digital tach for small engines on Amazon. It was about $20 and installs by wrapping the #1 coil wire and about the size of a Post-it pad.

 

[SiestaTom]

RESOLVED - turns out I had a bad test lead. Should have checked that before posting. Tach works just fine with with my Pertronix ignition.
Wiping egg off my face now.

 

[B y r o n]

Glad your issue has been resolved and you're not the first or the last of us to have a little egg on our face.