Instruction manual

9
If you don’t have a faster flashing LED, then you don’t have a good tach
signal or the DIP switches in the Servo are set wrong.
Check for a good connection at your Tachometer source. It’s fairly easy to
not have a good connection when using the Scotch lock connectors. The
Scotch lock connector needs to fit all the way over the wire you are
connecting to and the other wire needs to be fully in the top side of the
Scotch lock connector. Pull on the wires…If they come loose you found
your problem.
Did you pull the Black jumper to the left of the Dip switches inside the
servo?
If you still don’t have a tach signal. Are you really connected to the
tachometer signal of the vehicle? Might be a good time to get on to your
online vehicle forum and ask for advice.
Vacuum Canister Test:
Is port marked MAN is connected to engine vacuum and the port marked
AUX is connected to the vacuum port on the cruise servo?
Pull the Vacuum line off the Vacuum Canister and start the vehicle. Seal off
the end off the vacuum line to the engine with you finger. Do you feel
suction?
If you do, then you have Vacuum and you can reinstall the vacuum line to
the Vacuum canister. Vacuum isn’t your problem
If you don’t, then you either have a vacuum leak or the vacuum line is
pinched shut.
Brake Wire Connection Test:
The brake wire connection seems to be a common problem area.
When you press on either brake the Red LED inside the servo should be
continuously lit. The Red Led should go out when you release the brakes.
Check your purple brake wire connection using a digital Volt Ohm Meter
(VOM). Don’t use a test light, it could damage your vehicle’s ECM. The
Purple Servo wire must be connected to chassis ground (O Volts DC) for
the cruise to turn on. The Purple Servo wire must also have +12 Volts DC
applied to it to shut the cruise off.