msd 6a offroad

[jamber2541]

tach wont read, is this a bad sign, its on a 90 k5 with tbi

 

[4X4HIGH]

tach wont read, is this a bad sign, its on a 90 k5 with tbi

We need more info. Is this a fresh install of the MSD-6A or has it been in and working fine then the tach stopped working?

 

[jamber2541]

fresh install, on of those bought and lost finds in ones own garage, anyways hooked up using the gm msd harness and attached the grey wire for the tach, still no worky,

 

[4X4HIGH]

Hook your tach wire to the white wire coming off your coil and see if it works then.

 

[jamber2541]

thats eliminated with the msd harness, so if i understand correctly, leave everything hooked up the way it is and add the white wire from the coil.

 

[4X4HIGH]

thats eliminated with the msd harness, so if i understand correctly, leave everything hooked up the way it is and add the white wire from the coil.

Do you have the 8876 plug and play harness? http://msdignition.com/product.aspx?id=4685&terms=8876

I would think you could still splice into the white wire on that harness for the tach. Are you sure you have the rest of your tach wires hooked up correctly?

 

[jamber2541]

you are correct on the harness, and the tach worked fine prior to the msd box.

 

[sweetk30]

there should be a tach port on the msd box its self . last i knew on 6 series boxes unless its the true off road black box.

and if you cant figure it out pm this guy http://coloradok5.com/forums/member.php?u=974

 

[jamber2541]

its the black box, these past few years i have gotten a bad habit of putting things on the back burner, example would be the cab corners, i only have one done in a year, motivation is just not there anymore. i just wanna turn the key and go