A7 Autoswitch

Technical Information

  • Housing Dimensions: 1.42″ square, 0.315″ thick
  • Weight packaged: 0.244 Lb
  • Wire type: #20 600V rated
  • Relay Current Info: Max current draw for Autoswitch trigger wire (violet) is 200mA @12Volts With 150mA preffered maximum.
  • Weight installed with wires: 0.202 Lb
  • Wire lengths: Power feed, 24″ Sense wire yellow 36″
  • Package includes: 3 8″ tie wraps, 6 4″ tie wraps, 2 wire clips, adhesive tape, instructions.

How It Works

The visual LED blinks rapidly during the timed “window” up to 10 seconds long when you should release the trigger signal (high beam switch). The single tap to flash the high beams or leaving the high beams on will not activate the Autoswitch. LED shines green to indicate power to your auxiliary lights relay.

Identifying or locating the trigger wire

For all vehicles:

We can trigger from the high beam wire, or the brake bulb wire or any wire that gets 12Volts when an existing button (for some other use) is activated. The best starting point is the vehicle electrical diagrams however in most cases it is not available. The best method is to use a clothespin or other needle-like sharp rod to put on the end of your volt meter probe. Pushing the needle into the vinyl jacket of most wires will not damage the wire. Determine the most likely location of the wanted wire. For example if using a high beam trigger this would be right behind that control button, or on a connector leading from that control button. Alternate, maybe easier location can be near the high beam bulb instead. Now simply poke into the intended wire with the needle probe and trigger the button on and off (In this case high beam lights) continuously while looking for a reaction or 12V at the volt meter. Always have the black probe (ground -12V) connected to chassis or battery negative terminal. Once the trigger wire is identified, mark it with tape or marker. Knowing the colors of this wire can also permit finding the same wire easier at a more crowded wire bunch such as near main vehicle fuse box or computer, then simply verifying it once again.

For BMW CAN-BUS Motorcycles 2004/2005/2006 and later:

Turn ON the ignition and search for the 12V+ wire that turns OFF, behind the turn signal cancel button while the button is pressed, or activated. Notice the wire colors. Then locate same wire colors and confirm it at the chassis computer. The connection at the chassis computer is usually easier with more work space and a thicker wire at that point.

For BMW R and K models aprox 1994-2004/2005:

With the ignition OFF, search for the wire that shorts to ground, behind the turn signal cancel button while the button is pressed, or activated. Notice the wire colors. Then locate same wire colors and confirm it at the turn signal module. The connection at the turn signal module is usually easier with more work space and a thicker wire at that point. For this test, the VOM Volt meter will be set to Ohms or impedance to find a “short” or closed circuit.

For other BMW Motorcycles:

Early F models did not use a BMW electronic turn signal cancel and are considered non-BMW. Later F and G models, exact info not known. However if electronic, chances are it will be CAN-BUS otherwise mechanical and this would be determined upon close inspection.

Installation

The Autoswitch is easy to install. If you already have auxiliary driving lights installed with a controlling toggle switch and relay, Put the Autoswitch VIOLET wire where your toggle switch was connected on the relay coil pin. Tap the RED into any ignition-swtiched ‘ON’ wire for power, YELLOW wire to the high beam bulb wire. Add connection to ground, and neatly tuck the Autoswitch and wires out of the way in any convenient location. And without building a bracket, drilling any holes, or modifying your dash, you’re done!

Price: $35.00

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