bbfly OBD2 Splitter, B31 Full 16pin OBDII Port 1 Male Splitter to 2 Female Extension Cable 1.6IN/4CM (B31 1PACK)

Easy to install and works great, especially if you have multiple OBII plug ins.

This product helped me out so much when I was installing my dashcam and my tracking on my vehicle. I didn't want my dash cam to be pulling power from the battery so this helped me out a lot hooking it up to the Acc. I would recommend this If anyone wants to use acc instead of battery.

Very useful, it works as it should.

I have a 2021 Ram 1500 Classic with aftermarket electric running boards. My running boards draw power and signals from the OBD2 port to function correctly. Bought this splitter so I can hook up my running boards and still have the ability to connect my bi-directional scanner to the truck without having to disconnect my running boards and wear out the OEM OBD2 connection over time. Someone else mentioned this and it should be noted more clearly: There are two types of components that you will probably connect to the OBD2. Active or Passive Passive means that it receives power and/or information but does not send anything back. Active means it can communicate with the modules (computers) and manipulate them such as send signals/commands back (think a bi-directional scan tool). You DO NOT want to use this splitter to connect 2 active units at the same time. My running boards (for all intensive purposes) are passive. It does have a module that controls when to extend/retract the running boards but it is external and does not connect to the canbus or truck (other modules). It gets its power and signals (when the doors are open/closed) from the OBD2 port but that is it. When I connect my scanner, I have one passive (running boards )and one active (bi-directional scanner) unit connected to the OBD2 ports at the same time. You can have 2 passives or 1 passive and 1 active but I wouldn't suggest 2 actives. They could have compatibility issues and possibly cause internal damage to modules trying to communicate simultaneously. Imagine having 2 bi-directional scanners hooked up at the same time. One commands the truck to turn the cooling fan on and the other is commanding not to. You're asking for trouble doing things like this. If you need the ability to connect 2 active units at the same time, but don't want to constantly connect/disconnect both from the OBD2 port, I would suggest some type of splitter with a toggle switch that only allows power/communication 1 at a time. Keeps everything protected this way. Overall, very good splitter that doesn't break the bank for my needs.

Works perfectly on 2nd Gen Tacoma. I purchased this to run the ODB for an aftermarket headunit and still allow access to the ODB port without unplugging the headunit. Probably will purchase another for other vehicle.