popsicle_of_meat t1_iy59fdk wrote
Reply to comment by redditsux4me in Dashcam install to Subaru Legacy with hidden wires by Rick91981
I don't see those taps having a 3rd wire to provide power when the car is shut off, though? At least not for my car. I don't think these would work if you want to enable parking mode.
redditsux4me t1_iy5byuf wrote
Best way is to tap it into a small lithium backup battery, and a circuit to prevent battery drain. Blackvue offers these but it's cheaper to cobble your own. I do prefer these taps where appropriate, though. Makes wiring much easier.
popsicle_of_meat t1_iy5cqbh wrote
But then I have to find a place for the battery. I always read that keeping lithium batteries stored in a car (with drastic temperature swings--up to 160F in some cases) was bad for batteries?
redditsux4me t1_iy5f1e9 wrote
Bad for all batteries, yes. New modern cells are much better at higher temps. The real problems occur at extreme low temps, where they won't charge or they get severely damaged by charging.
Throwaway56138 t1_iy5sxhv wrote
Or just run the wires a little longer like in OP. You're way overcomplicating this.
redditsux4me t1_iy5up5s wrote
How do you figure I'm over complicating this? I offered my input as someone who owned and operated three separate car stereo and accessories installation companies.
Arcal t1_iy8s5f6 wrote
This is why some dashcams now come with super capacitors vs lithium cells. No degradation of performance over time/temp and they charge near instantaneously.
on_the_nightshift t1_iy6agey wrote
Late model Subarus have a circuit that drains the battery from the factory!
https://www.carcomplaints.com/news/2022/subaru-battery-drain-lawsuit-settlement-reached.shtml
titosrevenge t1_iy6vu1u wrote
> Based on the settlement agreement, each of the 13 named plaintiffs will receive $4,000, and the attorneys who represented those owners will receive more than $4 million.
Fuckers
redditsux4me t1_iy6bmaw wrote
Audis do too!
farmdve t1_iy8o40f wrote
I would avoid lithium ion batteries in hot climates and in general.
redditsux4me t1_iy9jz8u wrote
Yeah, that technology that is literally embedded in every computer, every phone, so many boats/RVs, and homes, is just unproven and scary. Best to just avoid all those things.
farmdve t1_iy9rlz0 wrote
Cars in the heat outside will generally reach 60c inside the cabin. A lithium ion battery hidden behind the dash may stay at those temps even after you've turned on the AC due to the restricted airflow.
In negative temperatures there are also anomalies and most cars need a few minutes to heat up.
MyMomSaysIAmCool t1_iy5hm9b wrote
Usually the mirror area has constant power for things like emergency buttons and map lights. And there's usually switched power up there as well, although sometimes it can behave oddly. For instance, my V60 has switched power that comes on when you unlock or open a door, and stays on until the car is off and locked, or off and unlocked for several minutes. That was perfect for my use, because it meant that I could start the camera just by unlocking the car. If a scenario ever came up where I wanted to record events in front of the car, I could just tap the unlock button.
_BindersFullOfWomen_ t1_iy5it92 wrote
Yep. When I installed my Valentine1 many years ago I used the passenger airbag light as the source wire. Was right there next to the mirror and it only had power when the key was in the ignition.
FullLegalUsername t1_iy85wh8 wrote
Chiming in for anyone who might see this. Please don’t tap power from the airbag circuit. Sending power or ground, even using a test light, on the wrong wire could cause your airbags to go off. Wires in yellow/orange plugs and loom are a no no.
Source: professional installer for 20+ years.
_BindersFullOfWomen_ t1_iy86jjs wrote
It wasn’t the airbag circuit though. It was just the light that tells you whether the airbag is enabled or not. Or are you saying that’s all part of the same circuit?
FullLegalUsername t1_iy87a97 wrote
I’m only saying to stay off of the airbag circuit in general, especially for a DIYer. I’m honestly not sure how the indicator circuit would be tied into the rest of the airbag circuit without seeing a schematic of the specific car, but I wouldn’t risk it. It’s like the number one rule in install bay.
_BindersFullOfWomen_ t1_iy87m1w wrote
That’s fair. I remember when I swapped out steering wheels; I was so paranoid I waited like 6 hours after disconnecting the battery.
[deleted] t1_iy6h2yi wrote
[deleted]
popsicle_of_meat t1_iy6hiq7 wrote
You need a 3rd wire to provide power for the 'parking mode'.
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