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r/autoelectrical

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Posted by9 days ago
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Posted by9 days ago
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Crossposted by14 days ago
Posted by14 days ago

I'm having an issue getting wiring to work on my 2013 CMAX hybrid. I know that it is a possibility, and I've done some trouble shooting so it is close. I'm hoping someone in here has some skills to help out.

I'm decently handy, but decided to bring this to an independent shop to put on the car-side harness. He used a Curt General Duty Tail Light Converter and connected to the battery in the rear of the car. Everything is nice and neat. When using a plug-in tester, everything worked from the jump.

When I plug in to my trailer (which worked with two other vehicles just fine) one side's blinker would work, the other side wouldn't and would disable the CMAX's same-side blinker. I've done some trouble shooting since then, but I didn't take careful notes on what was exactly going on.

I got a new set of lights and started setting everything up fresh and clean. Reattached the ground to a cleaner spot on the tongue and am using new harnesses on car side and trailer side.

Here is where I am at now:

Blinkers bright (running lights off)Break lights not as bright (running lights off)

When I turn on the lights (headlights and just running lights):

Blinkers don't workNo running lightsNo brake lights

With harness connected all of the CMAX lights are working just fine. I thought to check to see the fuse situation, but I understand that there is no dedicated fuse for running lights etc. No tow package fuse.

This makes me think that somehow the Curt adapter is not pulling enough power to light the running lights or the break lights as bright as the turn signals. If this is the case, I'm not sure what my next step is.

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Posted by23 days ago
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Posted by26 days ago
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