im wiring a flashing led to resemble a alarm system. and because i need this led to be on when the car is off, is there anything i can tap into without wiring to the battery and having to add another fuse? i know some cars have their 12v car outlets powered when the car is off but not our tl's! ill be wiring the power to a switch that i can turn on or off inside the car and the led will be mounted under the windshield. i have a base model 2003 tl

another thing is, what size fuse would i need for just 1 or 2 small led's if i go that route and get a inline fuse. thanks guys!

 

May be helpful, maybe not (hope so). Not sure about '03, but my '00 has the clock on the dash that is always on (at least for a bit after the car is off -- pretty sure it stays on though).

 

Wire an LED? We have one in the door already for the stock alarm.
If you want you could tap in that LED so it blinks too for the dash one.

 

How hard is it to run a wire from the battery, with an in line 20a fuse, through the firewall, & into the cabin? Wired up a constant hot power receptacle with a USB hub in less than half an hour, 2 wires, complete with fuse. Can charge my phone/camera/etc with the car off anytime I want now, super easy to do.

 

There is a constant power connection on the back side of the drivers side fuse panel. (there are switched, constant and with headlights). All you need is a female spade connector

 

well damn, where exactly? Which terminals?

 

have you looked- with flashlight or magnifier? a 12v test light will confirm which is which for you

my 01 has red LED on door panel top edge where a thief will see it blinking
Did they discontinue that on later years?

 

^ I don't think so I've seen it in every 2G I have seen in person...

 

hooking up that usb is an awesome idea! i didnt even think of that. i know its not hard, i even have a hole drilled in the firewall because of my subs.

now i dont have a test light but i do have a multimeter. can i use the multimeter to test out the connections behind the fuse box? and if so, what setting would i put it on?

 

Yes, you can test with a multi meter. Turn it to DC to test.

The one circled is for when the lights are turned on, I dont remember off hand which one is switched and which one is constant but if you test the other ones than the one circled you will find out.

 

You're the man!!! Is this on 99 ' s as well? Only reason I ask is because long ago I read where you said that 99 ' s are the oddball for everything lol

 

Sweet merciful crap I have em!!! Game on!

 

wow if that works then that will save me a ton of wire! thanks for that info!

 

well it worked. fsttyms was right. i was able to just get a female connector and wire my leds with very little wire. for the record, the one that has constant power is the one closest to the floor and closest to the engine. so bottom right if your looking at the back of the fuse box. thank you so much for this! 1 quick thing checked off my list!