Red 1 is set shift point. Red 2 is an over shift light that blinks if you exceed the set shift point by the blink.

Brake Lights Don T Light Ricks Free Auto Repair Advice
Shift light wiring diagram. On factory inductive ignitions without an msd connect to the coil negative terminal. The blue wire is optional. Autometer shift light wiring diagram pro p tach wiring diagram maipinineh pro p tach wiring diagram operates on 4 6 or 8 cylinder engines with points electronic and most 12v high performance racing ignitions pro p tach chart auto gauge tachometer installation manual 2 fpm using autometer was the very first to unleash a monster in the. Multiple light wiring diagram this diagram illustrates wiring for one switch to control 2 or more lights. When connecting the blue wire to your transmission brake or roll control switch you are creating a 1 second delay before your rpm switch can activate your shifter the first time. Black connect to ground.
When activating an airco2 solenoid with a normally open ground use figure d. Connect it to the tach output terminal of an msd ignition control. Can also be set. Set the adjustable knob on the back of the shift light to change the rpm setting. 7 reconnect the negative battery cable. If you have to cut any of the wires be sure to cover the end of each cut with electrical tape.
The 3 yellow leds will turn on before the set shift point by the amount of span selected. Be sure all of your wiring is correct to ensure proper shift light operation. The source is at sw1 and 2 wire cable runs from there to the fixtures. Orange and the brown wire loops. The following procedures can be done at any time during operation of the tachometer while the tachometer has power. The hot and neutral terminals on each fixture are spliced with a pigtail to the circuit wires which then continue on to the next light.
A shift light with a normally open ground use figure e. Whenever the ignition is turned on the shift light will illuminate for a couple seconds to indicate that it is operational. Wiring red connect to switched 12 volts. Green rpm input wire.