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Installation-NEW / ElectricalInstallation

Electrical installation

Due to its wide range of features, the DASH2 can be connected in many different configurations. The unit is supplied with a wiring harness consisting of two 14-way connectors to attach to the back of the DASH2, a serial connector for communication with a PC or data logger, and an array of flying leads for connection to the power supply, vehicle harness and external sensors. Figure 2 illustrates all DASH2 connections. Depending on your particular application and the features of the DASH2 that you wish to make use of, it may not be necessary to make all of the connections shown. The connector pin assignments and connector orientations are given in Table 1 and Figure 3 respectively.

A 500mA fuse must be used when connecting power to the DASH2.

The wiring up of the unit should only be entrusted to competent persons familiar with vehicle wiring installations, as incorrect installation may result in both a risk of fire and damage to the DASH2 unit. THE DASH2 WARRANTY DOES NOT COVER DAMAGE CAUSED BY INCORRECT CONNECTION. The flying leads from the DASH2 harness should be connected to the appropriate leads on the vehicle wiring harness using suitable connectors and with reference to the vehicle circuit diagram. Check the output configuration of any external sensors before connecting these to the DASH2 wiring harness to avoid causing damage to the DASH2 or to the sensor.

Figure 2: DASH2 electrical connections

NOTE: The DASH2 wiring harness is supplied in two sections. With reference to Figure 2 ensure that each harness section is connected to the correct connector on the rear of the DASH2. INCORRECT CONNECTION MAY RESULT IN INTERNAL DAMAGE TO THE DASH2.

NOTE: All connections to the DASH2 should be made with the power supply disconnected. The ends of any unused cables on the DASH2 wiring harness should either be insulated with the cables coiled and secured in a safe manner, or trimmed back and removed altogether.

NOTE: As indicated in Figure 2, the DASH2 is provided with its own power input and ground connections. These should normally be connected directly to a 12V power supply, but if the DASH2 is used with a DL2 data logger it is also possible to power the DASH2 from the DL2 by connecting the DASH2 +12V wire to Pin 7 of Conn1, Conn3 or Conn4 on the DL2, and the DASH2 ground wire to Pin 12 of Conn1, Conn3 or Conn4 on the DL2. It is recommended that a switch is included in the power supply wire to the DASH2; otherwise the unit will be on whenever power is supplied to the DL2, regardless of whether the DL2 is actually turned on or not.

Conn. Pin No Description Range Wire Colour
1 A Analogue input 4 0-15V Purple
2 C Engine Speed Input 12v Square wave White
3 E +12v Supply 10-16v Red
4 G Left indicator +12v to Activate White\green
5 J Analogue input 3 0-15v Pink
6 L Ground Black
7 M Main beam warning +12v to activate Grey
8 N Wheel speed input 5-12v Brown
9 O Analogue input 1 0-15v Green/yellow
10 P Alternator warning / field drive 0v to activate Green/red
11 R Brake warning 0v to activate White/yellow
12 S Analogue input 2 0-15v Blue
13 T Right indicator +12v to activate Green
14 U Fog light warning 12v to activate Orange
1 A Sidelights +12v when on Purple
2 C Switch common   White
3 E +12v supply 10-16v Red
4 G RS232 pin 3 (Rx)   RS232 Green
5 J Select button Switch to common Pink
6 L Ground   Black
7 M No Connection    
8 N Down button Switch to common Brown
9 O 5v Reference Output 50mA max Grey
10 P RS232 Ground   RS232 Blue
11 R RS232 pin 2 (Tx)   RS232 Red
12 S No Connection    
13 T Up button Switch to common Green
14 U Menu button Switch to common Orange

Table 1: Connector pin assignments


Figure 3: Connector orientation.

The pin assignment shows the connector viewed from the back (wire insertion side) of the connector.

NOTE: Please take special care to ensure correct orientation relative to connector keyway when identifying connector pins.

Page last modified on October 05, 2016, at 09:11 AM