Review on Eaglerich Wireless Transmitter Receiver Reversing by Stuart Dunn

Installed it in about a week and it works well from my trailer to my van. However, the 12 volt wires are too small to work with. I have an automatic wire stripper that will strip wires up to 22 gauge. He barely touched the insulation on those wires. You cannot use standard solderless connectors. I assume tiny wires will break due to vibration. How much would it cost to use a 20 gauge so it just plugs in?