Based on some other reviews I was concerned but this works perfectly for me. I have a Waylens360 dashcam power cable plugged into the main pass-through connector and my bluetooth OBD scanner uses a wired splitter. Both elements work at the same time without any problems. I could see this splitter giving issues due to the power supply, but as far as powering a fairly high end dashcam and an always-on OBD scanner should be fine. Potential problems could arise if your car has bad wiring or is older and can't provide enough power to the OBD port, but for my 2012 pair this works perfectly. However, I want the ribbon cable to be a standard round cable. that would make the installation much easier.
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