tach help

[sleepychallenger]

i installed the MP electronic ignition, what do i need to do to get the tach to work i read the instructions once but my buddy threw them away when i was out. it said something about the wire that goes to the distributer should be hooked to the neg on the coil?   

[GoodysGotaCuda]

factory tach? or aftermarket?

not positive on the factory tach, but in general they will pickup off the negative coil terminal

[sleepychallenger]

factory tach. but i wasnt sure if i had to cut a wire and reroute or if i need to splice or what.

[MEK-Dangerfield]

The original tach gets it signal from the "-" side of the coil, but if your's hasn't been rebuilt, I'll bet it is toast. They only last a little longer than the original clocks did.   


  Mike

[sleepychallenger]

it worked up until i had a fire under the hood. i just thought that maybe the wiring got toasted and never got hooked back up right, how would i check it? that is the gauge that i hate seeing dead the most

[Chryco Psycho]

as long as you connect the wire to - coil & have power to the guage it should work , how accurate it may be is another story

[sleepychallenger]

which wire   

[Chryco Psycho]

which wire what ?
the factory wire was usually grey with black trace on it , I can`t remember which terminal it comes through on the bulkhead connector

[sleepychallenger]

i just installed a MP electronic ignition and took out my points system. just wondering what wire i would need to move?

[Chryco Psycho]

with points the connections to the coil are virtually the same , you had a black wire from the dist to the coil - terminal this is replaced by a black wire with yellow trace to the - coil ,there would be a second grey wire to the negative coil for the tach that needs to be reconnected to - coil for the tach to work

[sleepychallenger]

thanks. it is hooked up but not working. i imagine that my tach is dead. will have to get it rebuilt one of these days. 

[wally426ci]

my tach is way off, maybe you and I need a rebuild kit.. 

[sleepychallenger]

mine was wierd when it worked. it was way off, but then when i stompped the gas, it was accurate.

[MEK-Dangerfield]

Guys,

  The original tach has a heavy needle, so it doesn't repond as quickly as the after-market tachs do. Once you get it rebuilt and calibrated, you will enjoy it. I watch that more than my speedometer. I had mine done here...  http://www.performancecargraphics.com/


  Mike

[sleepychallenger]

Thanks Mike, maybe when i get back from the desert i will have it done.