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.
| 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.
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