Speedhut CJ (Jeep) Speedometer Cluster - Manual (Page 4)

CJ GPS Speedometer Cluster - Figures #4 - #8
See Figures 2 and 3 for more wiring and installation information.
- 4 -
(Speedometer Wiring Harness)
Speedometer Signal Wire (Red/Green Wire)
FIGURE 4: Speedometer Sender Connection
(see Gauge Operation Instructions for calibration instructions)
FIGURE 5: Fuel Level Sender Connection
(see Gauge Operation Instructions for calibration instructions)
FIGURE 6: Temperature Sender Connection
Connect to the
speedometer pulse
signal. Acceptable
signals ranging from
1V - 100Volts.
500 - 250,000 pulses
per mile.
Speedometer
Fuel Level Wires (Pink and Yellow/Black)
Fuel level signal gauge wire (Pink)
Alternate ECU Setup: You can connect signal wire directly to the speedometer signal out on the vehicle’s ECU.
(white)
(black)
fuel sender output
fuel sender ground
will remain in last powered position.
Note: Fuel sender ground should be
connected to the fuel level sender
ground. If you do not have a fuel level
sender ground connect to the chassis
ground.
Fuel Level Ground gauge wire (Yellow/Black)
Temperature Gauge Wires
(Yellow/Red and Yellow/Black)
Fuel Level signal wire (Yellow/Red)
Fuel Level ground wire (Yellow/Black)
(Fuel Level Wiring Harness)
1/8 npt threads
will remain in last powered position.
Harness Wires:
White wire - Signal
Black wire - Ground
Trimable area
DO NOT trim pass the slot.
(Temperature Gauge Wiring Harness)
Black
Black/white
CAN high
CAN l
ow
Does your vechicle support the CAN-BUS protocol?
OBDII Note: Speedhut CJ Speedometer gauge will not function when used in conjunction
with any other OBDII device. Cycle the gauge power to restore proper gauge function.
OBDII CAN (J1979) protocol Pinout:
If the vehicle has wires that connect to pins 6 and 14 of the
OBDII connector then the vehicle supports the CAN-BUS
(J1979) protocol.
Pin 4 -- Chassis Ground
Pin 5 -- Signal Ground
Pin 6 -- CAN High (data)
Pin 14 -- CAN Low (data)
Pin 16 -- +12volt Battery power (NOT a source for gauge power)
Vehicle’s OBDII connector pin numbering
FIGURE 7: OBDII Setup
FIGURE 8: GPS Antenna and Hot Start Wire
1. Connect power distribution requirements as shown in Figures 2 & 3.
(Make sure that the vehicle battery is disconnected)
2. Connect the black CAN high wire (#4) to the OBDII pin 6, Connect the
white striped black CAN low wire (#6) to the OBDII pin 14.
[CAUTION: Do not connect to a powered OBDII system. Failure to do so
will throw a check engine code.]
3. Mount gauge for easy viewing.
Gauge
+12Volts Hot Start (Red/Black)
+12 Volts constant power (25 micro-amp draw)
GPS ANTENNA
Gauge
1. Connect GPS receiver antenna into back of speedometer.
2. For best performance, mount GPS antenna with as much view of sky as possible (preferably on the roof of
the vehicle). The GPS antenna is waterproof and magnetic. If the car’s roof is not accessible then mount the
antenna on top of the vehicle’s dash with as much exposure as possible to the sky through the window.
NOTE: Antenna is able to receive signal through some thin materials i.e. wood,
glass, fiberglass, and plastic. All types of metal will block the signal.
3. Hot start feature is optional. Connecting the hot start wire to constant +12volts allows GPS to quickly acquire satellites in less than 2 seconds. This feature saves your
current satellite position within the speedometer enabling it to quickly restore your position on power up when Speedometer has been powered off.
NOTE: Please note that if the speedometer has been powered off longer than 4 hours, it could take up to 1 minute to acquire signal due to the satellites moving significantly from your
location. This is normal.
Power Draw NOTE: The hot start current draw is extremely low (25 micro-amp) and will have virtually zero impact on a vehicle’s battery charge. Hot start wire should be connected
directly to battery +12voltage and should remain powered 100% of the time.