12V power outlet mod, possible?

[SSSVX]

See, some of the cars we drive. The 12V power outlet always stay on even if you turn off your engine, you can still charge your cellphone and get power from the outlet.

Some others car do not. Such as our SVXi don't have this feature. You have to turn your key to the ignition on in order to get power from it.

So how hard is it possible to modify our 12v power outlets(cigar lighter) to behave like the other cars at being safe?

[svxfiles]

It's as simple as running one wire.

[Trevor]

Originally Posted by svxfiles

It's as simple as running one wire.

However, male sure you tap into a fused circuit. Otherwise add an inline fuse assembly close to the battery, if this is the direct source of supply.

[SSSVX]

Hi, OT Thanks, Trevor.


However, does the factory one have the safety feature to automatically
cut off the power from the outlet if the system knows the battery is getting
too weak for you to start your car?

Say if you leave your car there for two weeks. And, you leave your power
outlet constantly on. If your battery is not strong already, weather's cold,
would "that" make your battery dead or too weak to start later on?

[svxfiles]

Originally Posted by SSSVX

Hi, OT Thanks, Trevor.


However, does the factory one have the safety feature to automatically
cut off the power from the outlet if the system knows the battery is getting
too weak for you to start your car?

Say if you leave your car there for two weeks. And, you leave your power
outlet constantly on. If your battery is not strong already, weather's cold,
would "that" make your battery dead or too weak to start later on?

Unless you have a device plugged into the "hot" outet, then it would be no different than with a stock setup.
(Where the clock is the biggest drain.)

[longassname]

I'm going to be posting more on this in the alternator wiring mod thread after I get someone to verify some stock wiring for me and I verify my own earlier observations..but it effects the idea of leaving things plugged in so I'll mention it here and now--not that it's a huge deal as it pertains to this or anything....but

Our alternator appears to function like a one wire alternator. If the S terminal isn't connected the alternator will still produce voltage and is still voltage regulated. The alternator currently on my car drains 210mA anytime there is power applied to the S terminal--as I believe in the factory wiring (this is what I'm waiting for verification of) the s terminal is connected to battery rather than ignition like most cars I think this drain is a malfunction in my alternator. Anyway, while I had the ammeter hooked up to find the drain and was pulling fuses I noticed my 210mA drain would go up to over half an amp after anything was powered back up and then 7 or 8 seconds later go back to 210mA. I took this to be the alternator kicking in the field current everytime anything drew any power from the battery.

If it does turn out that the s terminal is connected to battery with the stock wiring I'm going to be suggesting that people modify their wiring to put their S terminals to ignition. The AC fuse in the corner of the engine bay fuse box is a convenient source of ignition switched power. I have a fuse tap there and am now using it for both my alternator s terminal and my transmission cooler thermostatic switch.

[SSSVX]

Originally Posted by svxfiles

Unless you have a device plugged into the "hot" outet, then it would be no different than with a stock setup.
(Where the clock is the biggest drain.)

OT, what do you mean by "hot" outlet? Don't understand too much.
You're saying it won't drain the battery power too much, as it's about
same as the clock?
What is the max A you can get from that power outlet?
How much A does the clock draw from the battery?

Compare to if you leave your "parking light" on, the "parking light"
is drawing a lot of more power, right? I wonder how many hours
it will last till the battery dead if you leave it on all nights.

I don't know if any related to what they discuss. My teal one's
rear wiper blade will draw my full battery in 4-5 hours. During winter,
snow and icy, I turned on my rear wiper but it was stuck. I was
in hurry and I left it on and got off the car. I know my battery was
in good conditions. When I came back, I needed a jump start as
I couldn't start my SVX because the rear wiper didn't go back
to its original position and it kept trying until the battery's dead.