the green is the signal wire and it goes to the negative side of the ignition coil
on my tach, the green wire connects to the neg on the ign coil pack
Connect the green wire to the negative side of the coil.
The blue wire is usually just an auxiliary wire. The blue wire does not need to be connected. Tape the end of the blue wire off.
pin 48 on the pcm connecter is tach signal connect to your green wire from tach
The green wire is supposed to go to the negative wire of the coil , that is usually a white wire, but make sure that the tachometer documents tell you to use the negative wire it is usually the white wire. If you have a test light hook the cramp to the negative of the battery and check the two wires if the light glows that is the positive, connect the green wire to the other wire it will be the negative. There are some that say to use the positive, ""PLEASE READ THE INSTRUCTION VERY CAREFULLY"" Or you could short out the coil and the igition module.
Green wire on the distributor is the tachometer pick up. Green wire on the distributor is the tachometer pick up.
Get an RPM meter (tachometer) for 1 cylinder 4 stroke engine to match with your engine. Connect ground wire from RPM to body, usually black colored wire. Connect power wire to ignition switch, make sure it is connected to 'ON' position of switch, this wire usually with yellow insulation. Connect green wire to coil negative terminal, this terminal is connected to contact point or ignition trigger system, the wire from tachometer is usually with green insulation. Start your engine and check RPM reading.
usually green
You will need to connect the tach to a ground and +12v source, the signal wire will have to be connected to the ground on the coil. Since the truck is fuel injected, you will likely have to find a way to wire it in with the connector on the coil. Kyrasis6 Mazdatruckin.com
In order to install a tachometer on your 1987 Monte Carlo SS, you must first find the tachometer wire by using an automotive diagnostic tool. Mount the tachometer on the dashboard. Connect green, red, black, and white wires to the distributor, ignition power, cigarette lighter, and headlights, respectively. Turn on the engine to test if the tachometer works.
Connect the green wire to the brown striped black wire.
The green wire goes to the negative side of the coil. The yellow wire is probably for a light in the dial. You'd want to connect it to a power source that comes on when the headlights are on. The red wire should be connected to a source that is live anytime the key is in the on position.