So got the MSD installed. Everything is peachy, but the battery keeps dying on me, have a drain somewhere. I believe it is the terminal, as if I move it around it will go back up to 12 volts.

Anyways, here is the dilemma. Tach stays around 2k. It is an interference issue, as it doesn't hang around 2k, it bounces. Sometimes it will read idle, but mostly stays around 2. Once I get on the gas and moving, it shows the correct RPMs.

Also, this may also be terminal related, but my blinkers will blink super fast like a bulb is blown and the stop light on the dash will light up when I push the brakes. It is very dim though...


Maybe I am just paranoid. Anyways, I need to change the positive terminal and most of this should go away. Will the tach do the same?

MSD6A
2nd gen coil

Stock trailing

 

Hopefully, replace the ground as well. Do it all at once to eliminate the posibilities.

 

this happened to me last week minus the tach issues. my alt was only putting out 9.5 volts, and my terminals were junk. replaced both alt and terminals, now all is well

 

you need to buy a tach adapter for it to work.

 

Stu, did you run the tach wire from the spade terminal on the MSD or from the coil?

 

NO he does not need a tach adapter

 

use the factory tach lead (its yellow/green stripe) run it to the single terminal on the side of the msd box for a clean tach signal..
also check your chassis grounds with an ohm meter make sure the resistance isnt high..

 

From the coil.


Turns out it was the positive terminal. I put a shim in it and it works perfectly. Going out to get another terminal today.


Thats a good idea, never thought of that. Might have to do it.

 

If your still running the trailing pretty much stock, you don't need to modify the stock tach input. I told you when I can up last that those battery terminals were junk.