After some further reflection, I think I agree that both the battery + cable, the battery itself, and the dashcam hardwire kit are all suspect. Unfortunately my load tester broke so I can't really do a meaningful test with the battery that doesn't involve swapping it into some other vehicle. The ignition switch will be next to check if all of that seems to come out OK, but when they start falling apart they have a specific feeling to them, and this one doesn't have it.
The battery cable was a newer part (actually looked brand new) when I got the car, but is oddly twisted and bent so it could have many broken strands within.
The battery is a 2 year old Costco Kirkland battery and is still within its free replacement warranty, so testing it is a priority.
I am aware of the shortcomings of the hardwire kit and I fully remove the camera from the car if it's sitting longer than a few days, but it isn't clear to me that the hardwire kit can't consume a small amount of current on its own. I'm not sure what method it's using to drop the 12V down to 5.
I will try to warranty-replace the load tester, then load test the battery. If it falls on its face immediately, we know it's got a couple dead cells.
I also placed a RockAuto order for a pile of battery cables needed for various upcoming projects, and included appropriate items to fix this car if the cable ends up being the problem.
The main body ground has always been a little suspect to me on this car because it has always seemed like the voltage that makes it into the interior is a little saggy, but the engine controls (which have a dedicated ground) have never given me grief on this one.
The battery cable was a newer part (actually looked brand new) when I got the car, but is oddly twisted and bent so it could have many broken strands within.
The battery is a 2 year old Costco Kirkland battery and is still within its free replacement warranty, so testing it is a priority.
I am aware of the shortcomings of the hardwire kit and I fully remove the camera from the car if it's sitting longer than a few days, but it isn't clear to me that the hardwire kit can't consume a small amount of current on its own. I'm not sure what method it's using to drop the 12V down to 5.
I will try to warranty-replace the load tester, then load test the battery. If it falls on its face immediately, we know it's got a couple dead cells.
I also placed a RockAuto order for a pile of battery cables needed for various upcoming projects, and included appropriate items to fix this car if the cable ends up being the problem.
The main body ground has always been a little suspect to me on this car because it has always seemed like the voltage that makes it into the interior is a little saggy, but the engine controls (which have a dedicated ground) have never given me grief on this one.
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