7pin wiring harness braking power issue.
08-25-2019, 02:00 AM
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ML350 bluetec
7pin wiring harness braking power issue.
Hi there.
So I have a 2010 ML350 and I’m using a Curt Bluetooth brake controller, but now the factory 7pin brake wire seems to have constant power and when I hit the brake it even worse. You can hear my trailer brakes constantly running on the trailer and when I try driving the trailer brakes kick on and off, we tested it and seems to light up the brake light on a tester even though we are not touching the brakes. we also tested the curt with my trailer On another ML and worked great. We have pulled the trailer and used the curt controller with no issues. Is this a ground issue? Any ideas will help me
So I have a 2010 ML350 and I’m using a Curt Bluetooth brake controller, but now the factory 7pin brake wire seems to have constant power and when I hit the brake it even worse. You can hear my trailer brakes constantly running on the trailer and when I try driving the trailer brakes kick on and off, we tested it and seems to light up the brake light on a tester even though we are not touching the brakes. we also tested the curt with my trailer On another ML and worked great. We have pulled the trailer and used the curt controller with no issues. Is this a ground issue? Any ideas will help me
