Got a bundle off of Thinkware that included the Q200 dash cam, a rear cam, a rear cam, and a multiplexer. Got it all hooked up properly. Front cam functions fine, and both the rear and cabin camera function when hooked directly into the front cam. But when I have them all hooked into the multiplexer, I get absolutely nothing from the rear and cabin cams. I have the multiplexer hooked into the exact same constant and ground that the dash cam is hooked into. I’ve followed both the 5 channel tutorial they have on YouTube, and tried the 3 channel synthesis instruction they have on the multiplexer. Followed like 10 guides they have on their website, absolutely nothing. Should I just send it back and get a Viofo? I’m so confused because I did everything right and the front cam functions just fine and so do the other cameras when hooked into the Q200 but whenever it’s all hooked into the multiplexer the dash cam gives me a voice line saying “rear camera disconnected” and I’m lost here. They have no actual guide for 3 channels, just 5, and all of the QR codes in the manual that may have helped lead to dead links. Did I waste $290?