Directed Electronics BOA 165B User Manual

Page 24

Engine monitoring (tachometer—optional)

Identify the suspect wire according to the web information.

Place the black lead of the multi-meter on the negative battery

post and secure it. Put the multi-meter in the AC position and

connect the probe to the suspect wire with the red lead of the

multi-meter. Then start the vehicle with the key. With the

engine at idle the multi-meter should read between .05 volts to

1.5 volts.

Have a second person press the gas pedal to increase the RPMs

and watch the meter display. When the RPMs increase the

voltage should read between 1.5 volts and 2.9 volts. Once the

correct tachometer wire has been identified, turn the vehicle off.

Run the VIOLET/WHITE (H1/2) wire from the main

connector through the firewall into the engine compartment

along side the hood pin wire. Use the same procedure as with the

note! In the following procedure do NOT use the LED
tester. Use of this tester can cause grounding of sensitive
electrical components causing damage, including damage
to the power train control module.

warning! In the following procedure do
not wear loose clothing that could get
entangled in rotating engine components.
Ensure that your hands and arms are well
clear of these rotating components when
working in the engine compartment.
Lastly, ensure that all wires and tools are
clear of falling into or entanglement with
these rotating components.