hooking up tach where?

[88 Dippy]

ok i found an old tach harness wire in to it and i get no tach signal it gets power and lights up so what wire goes to the tach signal o the dizzy? and where is the tach signal? i have a HEI non computer controled the wire colors are white,red,black, and green i think it's the green wire becuase it is the longest out of all of them. the tach is a sun pro 2"-3"

[dieseldr4]

it should be the green one, at least with autometer tachs thats the case... that green wire plugs into the tach terminal on the hei distributor. i hope this helps, tom

[88 Dippy]

it does. now i just need to find the terminal.

[dieseldr4]

if youre looking at the distributor cap you will see its obviously round. see where that square, thing that (should) be on the driver side of the cap.. thats where the module and power hook from the distributor to the cap.. if you clean off the top of that square part you will see where it says "tach".. thats where the green wire goes, use a female spade connector and youre dialed..

[88 Dippy]

so simple i feel stupid thanks


(man it's been a long time since i worked on an old GM)

[dieseldr4]

well i was just tryin to help you out... not tryin to make you feel stupid... glad i could help out..

anb by the way, stupid woulda been not asking and hooking the tach up wrong and burning it out...

have a great day!

[73chevyman]

i should take a picture of it but are older motors should be set like they say.