[Power]How to solve the car battery drain issue on new Dec 11, 2015Cause the wire is constantly with 12V power from car battery even if car key removed, if you connected any wire to this wire to get power, then it will also drain car battery. If above are checked but still drain battery, then it maybe the radio is problem or any other area problem from the car, you may need to contact a car shop to check. Battery Dies After Installing the Curt Powered Wiring There are a few things that could cause your battery to drain after installing a trailer wiring harness like the Curt T-Connector, # C56329. The first thing that we can test for is a bad converter box.
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