For those of you familiar with the 2002 4Runner Daytime Running Light (DRL) modification process, I have a question for you.
For reference:
2002 4Runner: DRL Disable With On/Off Capability - YotaTech Forums
I have completed the process where you locate the DRL module in the driver footwell, unplug the plastic connector, locate wire in pin 12 (Yellow/Black), and cut. I have then routed those two wires up to the left of the steering wheel to a LED (3pin) rocker switch. I wanted to make the LED light work, so I ran a wire from the ground pin to ground and....... shorted out multiple cabin fuses including the gauge lights and radio.
What I cannot figure out is why!?!?! I have very little electrical engineering knowledge, but to my understanding, that ground pin on the rocker switch is only grounding the LED light inside the switch to complete the LED light circuit. The switch is interrupting the circuit to the DRL module on the positive side via the Black/Yellow wire. The circuit continues to ground via Pin 2, White/Black for the DRL module.
Please help my feeble brain understand this before I wind up frying more fuses or myself.