Many car enthusiasts and DIY mechanics utilize OBD2 Bluetooth adapters like the BAFX Products PIC18F2480 for vehicle diagnostics and performance monitoring. These adapters, while incredibly useful, often draw constant power from your car’s battery, even when the ignition is off. This can lead to battery drain over time. If you’re looking for a solution to this issue and want to ensure your BAFX Bluetooth OBD2 adapter only powers on when your car is running or in accessory mode, this guide is for you. We’ll walk you through a simple modification focusing on the Bafx Bluetooth Obd2 Pin configuration to achieve switched 12V power. This modification is straightforward and can be completed in about 15 minutes with basic tools.
Step-by-Step Guide to Modify Your BAFX Bluetooth OBD2 Adapter for Switched Power
This modification involves rerouting the power supply within your BAFX Bluetooth OBD2 adapter. By moving a single wire to a different bafx bluetooth obd2 pin, we can switch the power source from constant 12V to switched 12V, which is only active when the car is on or in ACC mode.
Step 1: Accessing the Internals
First, you’ll need to open the BAFX Bluetooth OBD2 adapter casing. Locate the blue label on the adapter. Beneath this label, you’ll find four screws. Carefully peel off the adhesive label to expose these screws. Using a small screwdriver, remove all four screws.
Step 2: Disconnecting the Connector
Once the screws are removed, gently separate the two halves of the adapter casing. Inside, you’ll see a white connector linking the OBDII connector to the PC board. Carefully unplug this white connector from the PC board. This will allow you to safely work with the OBDII connector.
Step 3: OBDII Connector Removal
With the white connector unplugged, you can now lift the OBDII connector assembly entirely out of the adapter’s shell. This provides easy access to the wiring and bafx bluetooth obd2 pin layout for modification.
Step 4: Pin Repositioning (Pin 16 to Pin 8)
This is the core of the modification and focuses on the bafx bluetooth obd2 pin configuration. Locate pin 16 and pin 8 on the OBDII connector. Pin 16 is typically wired for constant 12V power, while pin 8 is designated for switched ACC 12V power in many vehicles. In the provided image, Pin 16 is situated on the top left, and Pin 8 is on the bottom left, making the wire move very straightforward. Carefully move the wire currently connected to pin 16 and insert it into the pin 8 slot.
Step 5: Reassembly
After repositioning the wire to the correct bafx bluetooth obd2 pin, place the OBDII connector back into the adapter shell. Reconnect the white connector to the PC board, ensuring it is firmly plugged in.
Step 6: Final Steps
Carefully reassemble the two halves of the adapter casing, aligning them properly. Secure the casing by reinserting and tightening the four screws. Be cautious not to bend the five small LEDs located on the PC board during reassembly. Finally, you can choose to reapply the blue label or leave it off – this is purely cosmetic.
Conclusion
Your BAFX Bluetooth OBD2 adapter is now modified for switched power! It will function exactly as before, but it will only receive power when your car’s ignition is turned on or in accessory mode. This simple bafx bluetooth obd2 pin modification effectively prevents unnecessary battery drain, ensuring your car battery remains healthy. This switched power setup works seamlessly with OBD2 applications, providing a convenient and power-conscious solution for using your BAFX Bluetooth adapter.
