generaly: red = coil green/blue = insrument light power black = ground
look on the distributor cap, there is a slot marked "tach", connect the hot wire there and ground the other wire
IF you have the installation instructions for the tach, it prolly tells you where to attach the tach wire. If not, call the manu. of the tach or search for their website online.
the tach wire is a solid green wire that runs from the dizzy to one of the loom connectors.
hook your green wire from the tach to the white wire from the coil PAC it should be a white and a yellow wire coming from the coil. the tach should have a white wire that will be your light inside the tach a red wire for power and a black for ground.. good luck
where is the tach wire en Toyota tacoma 1999 4 cilinders
what colour is the wire i use to hock up a tach on a 1989 Chevy 350
sounds like a dead short in the tach wire, trace the tach wire and see if it the wire insulation has been broken.
green wire on aftermarket tachs are the signal wire i belive
theirs a green wire by distributer that is for the tach
tach signal wire is a blue wire with a black cap that ends on the top of the strut tower near the firewall...done
At the dist there should be one to power the dist. & one for tach signal. Unplug one & see if car starts or if tach still works. Can't really remember for sure as its been a while lol. My 1972 tach wire is brown and it has a inline fuse from the factory. Your tach wire will be connected to the negative side of your terminal witch is labeled "tach".
The tach should connect to the distributor.