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2 1/16” Ultragage with Memory Instructions
Warning: Before doing any work on any kind of vehicle, disconnect the negative (-) battery cable. Failure to do so may result in burns, electrical shock, or other personal injuries and damage to vehicle.
Recommended installation technique:
Thermocouple Sender Instructions
1. The thermocouple Sender normally mounts in the exhaust manifold. The supplied fitting has a 1/8” N.P.T. on one end that threads into the exhaust system. The sender probe slides into the fitting and is securely held in place with a ferrule and nut. Be careful to not over tighten the nut.
2. The location of the sender greatly affects the temperature reading. Choose the location carefully. If there already is a taped hole in the exhaust manifold or collector start with that location.
3. If using an existing 1/8” N.P.T. tapped hole simply thread the “long” end of the supplied fitting into the hole and tighten. The “long” end has the most threads and they are tapered. Tighten the fitting with a 12MM open end or adjustable wrench.
4. If you are going to drill a hole to mount the sender it is suggested you drill a hole in the exhaust manifold a few inches from the connection with the collector. Start with a small size bit and work up to a11/32” hole. Then tap the hole with a 1/8: N.P.T. tap. Refer to set #3 for installing the fitting.
5. Place the ferrule in the nut. The flat side of the ferrule faces out, away from the small hole. Thread the nut with the ferrule onto the fitting. Turn it just a few turns. Slide the thermocouple probe into the fitting until it reaches the stop. Tighten the nut with a 12MM open end or adjustable wrench. Tighten just enough to make probe secure. Do not over tighten.
Wiring Connections Red Wire: Ignition Wire, hookup to a switched +12 volt source. Example: Accessory fuse in fuse box.
Black Wire: Ground wire, mate the black wire from the memory switch with the black wire from the gauge and connect to a good ground. Example: Battery (-) terminal or engine block.
Purple Wire: Dimmer wire, hookup to a switched light source. Example: Any switched light bulb.
Blue Wire: Memory recall wire, mate the blue wire from the gauge to the blue wire on the switch.
Amplifier Box: It is recommended the Amplifier Box be mounted in the vehicle cabin. Route the black connector on the shielded cable through the fire wall. Either use an existing hole or a hole will need to be drilled. The female (small) end of the connector needs at least a 9/16” opening. All wires brought through the firewall should be routed through a rubber grommet.
Connectors: Mate the small white connector between the gauge and amplifier box and the black connector between the Thermocouple Probe and the Amplifier Box. Dress and secure all wires. The wires should be routed away from the ignition system, spark plug wires or any type of electrical noise imposing wires.
Understanding and Setting the Warning Indicators
The chart below lists gauges, their operating range and four indicators. The gauge will flash as a warning that readings are getting close to being out of normal operating range. The gauge will scroll “hi” or “low” when readings are completely out of normal operating range.
EGT
Range: 300 to 2000 degrees Fahrenheit
Low scroll: 300 degrees
Low flash: None
Hi flash: 1100 tom 2000 degrees Fahrenheit
Hi scroll: none
Each gauge can be looked up in the chart above to ascertain which warning indicator is adjustable.
To “set” the high flash warning indicator proceed with the following steps:
1: Turn off the gauge. (Remove +12 volts applied to red wire).
2. If the dimmer wire is connected to a switched light source, turn on your lights. (Otherwise place a +12v to the purple wire.
3. Turn on the gauge. (+ 12 Volts to the red wire)
4. The gauge is now in “set” mode. The display number should be flashing With a small screw driver, either flat blade or Phillips, turn the adjustment pot located through the hole in the back of gauge until the number displayed is where you would like gauge to begin flashing.
5. Wait 30 seconds to make sure the desired number stays displayed. If the number changes repeat step 4. If number holds continue with the next step..
6. Turn the gauge off. (Remove +12 Volts from red wire.)
7. Turn your lights off. (Remove +12 volts from purple wire.)
8. The warning indicator is now set and can be checked anytime repeating steps 1 – 3. To re-adjust your warning indicator repeat steps 1 – 7.
Memory Recall
1. Make sure the switch is wired up properly per the gauge instructions.
2. Press the switch button. The gauge will display the “hi” reading. All readings are from when the gauge was turned on.
Gauge Reading
Troubleshooting
Troubleshooting related to EGT gauge
Gauge does not light:
1. Check to make sure of a good ground.
2. Check the fuse, if used
3. Make sure +12 volts is supplied to the red wire.
4. Test gauge by hooking up directly across battery. Red wire connects to the + terminal and the black wire connects to the - terminal. The gauge will light up and scroll “lo”.
Gauge does not dim:
1. Check the connection to the purple wire. Make sure there is +12 volts when the headlight switch is on.
2. Test the dimmer wire by hooking up to the + terminal on the battery after disconnecting purple wire. When connected the gauge should dim. When not connected the gauge should, within a few seconds, be bright again.
Gauge scrools “lo”:
1. The probe temperature is below 300 degrees Fahrenheit.
2. The white connector is not mated.
3. The black connector is not mated.
Memory recall does not work:
1. Check connections between the switch and the gauge. If blue wire from gauge is touched directly to ground the gauge should display the ”hi” reading.
Gauge Temperature reading is erratic:
1. Check to be certain the shielded cable from the sender is routed away from the ignition system, spark plug wires or any type of noise imposing wires.
2. Make sure there is a good ground connection to the block.
The gauge will not go into the flashing Warning Indicator “set”:
1. Be certain there is +12 volts to the purple (dimmer) wire before the gauge is turned on.
Cyberdyne: 724-258-8440