2.5 CONNECTING REMOTE DEVICES
2.5.1 PINS 1 & 2: Vehicle Battery (Power Source)
The vehicle battery must be connected to pins 1 and 2 of the DC Power/Signal connector. Pin 1 must connect to +Battery and pin 2
must connect to –Battery (usually chassis, ground, or common). It is recommended that a 20 amp slow blow fuse be connected in
series with the +Battery wire. Refer to section 1.4.1 for additional information.
Figure 2-4 Vehicle Battery Connection
2.5.2 PINS 3 & 4: Auxiliary Battery (Optional)
Long power wiring runs can cause excessive voltage drop for 12VDC systems. 24 volt systems are typically not affected by longer
runs of power cabling. If your 12 volt system power wiring runs exceed the length in table 2-4, an auxiliary battery is recommended.
Pins 3 and 4 provide the connection for an optional auxiliary battery. Pin 3 must connect to auxiliary battery positive, and pin 4 must
connect to auxiliary battery negative. These two pins are checked by the Universal II at power-up to see if an auxiliary battery is
connected. If one is sensed, it is engaged and a small amount of trickle charge is applied. If this optional feature is not used, it is
recommended these pin locations be fitted with Deutsch pin sealing plugs. Contact Akron Brass technical support if you have
additional questions about the use of this feature.
Wire Gauge
Max Recommended Cable Length (12VDC systems)
12 AWG
16 Feet
10 AWG
25 Feet
Table 2-4 Maximum power wire lengths without Auxiliary battery
2.5.3 PINS 5 & 6: Hi-Riser or Valve Control
Pins 5 & 6 are optional outputs used to send power to an electric valve motor or an electric monitor riser. Both of these functions
are optional. Check wiring diagrams specific to the Universal II being installed to determine which function is enabled. If these out-
puts are not used, it is recommended these pin locations be fitted with Deutsch pin sealing plugs.
2.5.4 PINS 7-9: Logic Outputs
Pins 7 through 9 are current protected solid state power outputs. The output pin is connected to positive system voltage when
turned on. Pin 7 powers the operator station LED when installed. Pin 8 is typically used to power an indicator light for the discharge
(when software is configured to control a valve with the joystick trigger). It is turned on when the trigger is pushed. Pin 9 is typically
used to power an indicator light indicating when the unit is in high gallonage. It is turned off when unit is switched to low gallonage.
Please refer to the appendix for the particular version Universal II for their assigned functions. Refer to Figure 2-5 for wiring exam-
ples. If any logic outputs are not used, it is recommended these pin locations be fitted with Deutsch pin sealing plugs.
Figure 2-5 Logic Output Wiring
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Fig. 2-5
Fig. 2-4
