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I'm hoping someone can share some expertise with me on current/voltage, etc so I don't burn or short something out.
I've been wanting to tweak the car a bit in two ways with the trunk light. It only comes on when the trunk is open so I figured I would tap into it to (1) make my trunk light brighter and (2) make a trunk open indicator for myself.
So I got to the wiring back there. The two wires leading to the trunk light are pretty thin. You can see my not-so-know-how coming in here. I believe to strip the wire a bit I had to use the 22 gage slots on the wire strippers. I piggy backed some speaker wire (the only stuff I had on hand) that is about 16 gage on it. Now, I did this twice for the reasons above. I fed one set of lines down through into the trunk using those convenient holes right around the trunk light.
The other set I'm in the process of feeding through to the front of the car. On this line, I'm attaching a 194 bulb holder and plan to place a single led on it. Whenever the trunk pops open - voila, it lights up wherever I mount it on the dash. I'm currently looking for a trunk release button on a car (any car) that can be illuminated from the back. I'll mount this somewhere by the dash... I only realized tonight that our trunk release button is not illuminated (was going to buy a spare from Mazda to mod).
Plans for the other line were to connect either an LED strip of probably 3 bulbs or a similar 3-4 bulb dome light to mount near the original trunk light. That should be enough for me to actually SEE into the trunk at night.
So I'm all wired up and the lights work, but only as tested. I figured before I made it permanent I would find out if this is a bad idea. What concerns me is the original size of the trunk light wires and bulb. They are tiny. With this mod, I would not even use the original trunk light but I'll be powering 4-5 additional LEDs using a thicker wire.
Will I short anything - or worse burn out the original wiring by drawing too much current? I don't know all the numbers but from superbrightleds.com, the specs for a 3-LED light bar in white is 107 ma. Red is more at 250 ma. A single LED (inverted at least - I figure all will be the same) is 20-25 ma. Don't know the specs on the dome lights from autolumination.
I figure if worse comes to worse, I think I can at least use the one line with a single LED for a trunk light indicator up in my dash without a problem. Then again, my thicker speaker wire may still screw me.
Thanks in advance for your help. BTW... if anyone knows what kind of car has an illuminated trunk button, please let me know.
Please see pics attached for an idea of wire size (harder to tell though in the pics than in real life) and original trunk bulb.