tachometer on gmc

[likearock78]

hey i got a 88 gmc with a 350 and i was wondering where i run the wire off my tach too? thanks

[SpeedDevil]

the negative size of the coil. some distributors even have a place that says 'tach'.

[likearock78]

alright thanks ill let u no

[likearock78]

do u no what colour the wire would be and what harness it comes out of

[NEUMANNZZ]

if you have a grey connector its the wire next to the pink ignition wire(12 volts power). follow that wire along the harness if there is actually a wire there. there will be a tach lead connected to it. no wire then use a terminal connector to install a tach wire.