Bosch Tachometer Wiring

Use tie wraps to secure the tachometer wires to the body of the car. Tach item no d escription qty. The sport iii tachometers deliver style and performance while featuring our highest accuracy with fast needle response for complete scale.

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Bosch tachometer wiring. Ignition coil hei with tach output on standard ignition coils connect the signal wire from the coil negative to sig 2 on the back of the tachometer. Run the tachometer wiring around or through the dash board down to the firewall behind the gas pedal. Gauges custom gauge face kit car truck speedometer tachometer oil pressure coolant. Bosch custom gauges installation instructions keywords.

Separate the wires that will be connected inside the passenger cabin and those that will run into the engine compartment through the firewall. Sport iii 5 tachometer black face fst 7905 bosch gauges represent the latest in design following our 100 year history of automotive industrial and racing products. Check of the tachometer be made prior to making a permanent installation. Clip the black lead from the tachometer to the negative battery terminal.

Wire splice to dimmer switch light wire lamp instrument grommet wire to gnd gnd wire signal wire. Connect the signal wire from the hei tach output terminal to sig 2 on the back of the tachometer. From ecu and tachometer adapters. Clip the red lead from the tachometer to the positive battery terminal.

On hei ignitions with tachometer output. Clip the green lead from the tachometer to the negative side of the ignition coil or.