Truck
Jeep
ECMTAMerchant
Helping you fulfill your need
1. Connect red wire from gauge to a switched 12v source (12v switched power source means that there are 12v to the red wire when the ignition switch is on and no voltage when the ignition switch is off)
2. Connect black wire from gauge to a good engine block ground
3. Connect purple wire from gauge to the nighttime dimming circuit (The purple wire must be connected to the headlight switch circuit so that there are 12v to the purple wire when the headlightswitch is on and no voltage when the headlight switch is off)
4. Connect the white wire from the gauge to the negative terminal on coil or to tach terminal on distributor
NOTE: Gauge with optional memory feature will have a blue wire. Connect blue wire to blue wire from memory switch packaged with gauge. Connect black wire from memory switch to ground.
The one which all the others will be gauged
Mini Tachometer Installation Instruction
