Specifications
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APPENDIX II. CONNECTION TABLES
Ignition relay on SST-4 is “Normally Closed”. If power is not supplied to the board, the
ignition circuit will be closed and the ignition function will not be interrupted.
The SST-4 hour meter can be triggered either by the MASTER signal or the SPARE signal
on J1 Pin 1. This is user-programmable, as described in Section 5. PROGRAMMING.
T1 and T2 are identical, except T1 controls Relay 1 and T2 controls Relay2.
1.
2.
3.
T1 Pin Label Function Vehicle Wire Label
1 RLY1 N.C. Common to throttle control relay one, Normally Closed Throttle Circuit RLY 1 NC
2 RLY1 N.O. Common to throttle control relay one, Normally Open Throttle Circuit RLY 1 NO
3 RLY1 N.C. Output from throttle control relay one, Normally Closed Throttle Circuit RLY 1 NC
4 RLY1 N.O. Output from throttle control relay one, Normally Open Throttle Circuit RLY 1 NO
T1 & T2 Connections
TB1
Pin#
Label Function Vehicle
Wire Label
(typical)
1 GND
Ground (Use negative battery connection, not
vehicle chassis.)
Battery (-) GND
2 START OUT Supplies power to starter when relay is enabled
Output from key
“Start”
STARTER
3 VBAT Supplies +12V to board in normal operation Battery (+) VBAT
4 AUX IN
Auxiliary input. May be used for Emergency
Power or other user dened function.
E-Power battery AUX BAT
5 AUX OUT
Auxiliary output supplies high current output to
E-pump or other function when relay is enabled
E-Pump AUX OUT
6 IGN IN Ignition input signal.
Key side of ignition
splice
IGN IN
7 IGN OUT Ignition output
ECM side of
ignition splice
IGN OUT
TB1 Connections
J1# Label Function Vehicle Wire Label
1 PRESSURE Pressure sensor trigger input.
Engine oil or PTO
hydraulic uid sensor.
PRESSURE
2
AUX
TRIGGER
Triggers Auxiliary circuitry used for E-
power
E-Pump switch AUX TRIG
3 MASTER
Enables SST-4 operation and triggers on-
board hour meter
Master enable switch MASTER POS
4 THROTTLE Triggers throttle circuitry on SST-4 board Bucket Throttle switch THROTTLE
5 START/STOP
Triggers Start/Stop circuitry on SST-4
board
Bucket Start/Stop
switch
START TRIG
6 GROUND
Ground (Use negative battery connection,
not vehicle chassis.)
Battery (-) GND
J1 Connections
T1 Pin Label Function Vehicle Wire Label
1 RLY2 N.C. Common to throttle control relay two, Normally Closed Throttle Circuit RLY 2 NC
2 RLY2 N.O. Common to throttle control relay two, Normally Open Throttle Circuit RLY 2 NO
3 RLY2 N.C. Output from throttle control relay two, Normally Closed Throttle Circuit RLY 2 NC
4 RLY2 N.O. Output from throttle control relay two, Normally Open Throttle Circuit RLY 2 NO
1 2 3 4 5 6 7
TB1
6
3
J1
4
1
4 34 3
1
T1
2
T2
2 1
J1 INPUTS TBI T1 T2
PIN FUNCTION TSP FUNCTION PIN FUNCTION PIN FUNCTION
1 PRESSURE 1 GROUND 1 RLY1 NORM.CLOSED 1 RLY2 NORM.CLOSED
2 AUX TRIG 2 START OUT 2 RLY1 NORM.OPEN 2 RLY2 NORM.OPEN
3 MASTER 3 MAIN POWER (VBAT) 3 RLY1 NORM.CLOSED 3 RLY2 NORM.CLOSED
4 THROTTLE 4 AUX IN 4 RLY1 NORM.OPEN 4 RLY2 NORM.OPEN
5 START/STOP 5 AUX OUT
6 GROUND 6 IGNITION IN
7 IGNITION OUT