Instead of bypassing the switch, you should diagnose and fix the underlying problem. The switch itself might be faulty, or there could be a wiring issue. Here's a better approach:
1. Check the brake lights: Verify that none of your brake lights are working. Have someone press the brake pedal while you check all three lights (two on the rear and one on the center high-mounted stop lamp).
2. Inspect the brake light switch: This is usually located on the brake pedal assembly. It's a small switch that's activated when the brake pedal is pressed. Visually inspect it for any obvious damage or loose connections.
3. Test the brake light switch: There are several ways to test it. You could use a multimeter to check for continuity when the brake pedal is pressed. A simple test is to use a test light to check if power reaches the switch and if it passes through when the brake is depressed. If you are not comfortable doing this, it's better to take it to a professional.
4. Check the wiring: Inspect the wiring harness connected to the brake light switch for any broken wires, corrosion, or loose connections. Trace the wires from the switch to the brake lights themselves to identify any breaks along the way.
5. Replace the brake light switch (if necessary): If the switch is faulty or the wiring is damaged, replacing them is the correct solution. This is a relatively inexpensive and easy repair for most mechanically inclined individuals, but a mechanic can also do it quickly.
Again, bypassing the switch is extremely dangerous. Please prioritize repairing the issue properly to ensure your safety and the safety of others. If you are unsure about any of these steps, take your Cadillac Catera to a qualified mechanic. They have the tools and expertise to diagnose and fix the problem correctly.