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DATAP R O-45™

Connecting to a Transbrake

Connecting to a Two Step without a Transbrake

Connecting to a Clutch or other Switch to 12V

Transbrake wire looses 12V on launch

Two-Step control wire looses 12V on launch

12V

You may need to add a switch or relay, such as one connected to the clutch. See Figure 4. One side of the switch or relay output should be connected to 12V while the other side should be connected to the blue wire. The contacts of the switch or relay should open whenever the vehicle is launched. It’s OK if you have other devices connected to this switch; they will all act independently.

FIGURE 2:

FIGURE 3:

FIGURE 4:

Transbrake

Two Step

other switch

Coil

opens on

Blue* Start Wire

Chassis Ground

Blue* Start Wire

Clutch or

launch

Blue* Start Wire

  • *

    Connect this signal wire to junction box position B11.

TESTING: Before your Vehicle Reaction Timer function may be tested, the “timer stop” signal must also be connected. This is normally done with an accelerometer or motion switch attached to junction box position A3. Please see the testing instructions later in this manual.

1.4.6.

Record Switch

The record switch should be mounted on the dash or in a suitable position to be operated by the driver. Alternatively, the switch may be mounted outside of the car where a crewmember may activate it.

One side of the record switch should be wired to junction box position B12. Any color 14-20 gauge automotive type wire may be used. The other side may be wired to a convenient chassis ground location. Alternatively, the ground connection may be made at any convenient junction box ground position, such as B9.

TESTING: While looking at the LCD display of your DATAPRO-45™, turn the record switch on. The display should say “Recording.” When you turn the switch off, the LCD display should say “Stop.”

1.5.

Junction Box Connectors G and H (switches only)

Copyright 1999 Computech Systems Inc

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