ODB2 Power Saver Lead instructions for use

Important note: an incorrect connection sequence will impair the functionality of the warning LEDs and could result in the power not being saved. Please ensure that these instructions are adhered to.

Before you start ensure that the radio code or other setting have not already been lost due to excessively low battery voltage. This will prevent any debate with the customer or concern that the OBD2 power saver tool did not function correctly after the repairs have been concluded.

1. Ensure all electrical loads are turned off, if possible turn off the interior lights. If the vehicle is to be left with the power saver plugged in ensure that the keys are removed and either the customer or other mechanics know not to turn any electrical loads on as this could blow either the vehicle's fuse or the lead's fuse. If the engine is very hot allow it to cool before disconnecting the battery to ensure the cooling fan does not attempt to start.

2. Locate the vehicle's OBD2 / EOBD diagnostic socket and plug in the power saver lead.

The yellow LED on the lead will illuminate if the vehicle's wiring and fuse are in working order. If the yellow LED does not illuminate the lead cannot be used. It may be possible to check the vehicle's diagnostic socket supply fuse.

DO NOT PROCEED IF THE YELLOW LED IS NOT ILLUMINATED.

3. Connect the crocodile clips to the correct polarity of a remote battery supply (jump pack, spare battery).  

Both LEDs should now be illuminated. If the green LED is not illuminated check the lead's fuse or the polarity of the remote power source. If you are using a battery pack with a master power key ensure this has been turned on. Once both the green and yellow LEDs are illuminated the vehicle's battery can be disconnected.

4. Disconnect the vehicle's battery; please note that the positive terminal of the battery is still ‘live'. If there is a possibility of the terminal touching earth then insulate the terminal, as illustrated below where a latex glove has been cable tied around the terminal.

5. Leave the OBD2 Power Saver lead connected for as long as the vehicle's battery is removed. Once the battery has been replaced and both the positive and negative terminals have been secured then the lead can be removed.

Note: do not use the OBD2 Power Saver in the rain, as water may enter the intermediate box where the fuse cut out is located.

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Made in the UK