Chevrolet Colorado Running Light Not Working

My Driver's Side Taillight Wiring Harnesses Get Caked With Mud And I Have Bypassed It Almost Entirely. Now I Have Brake Lights And Turn...

My Parking Lights Don't Want To Come On. They Normally Come On With The Day Time Running Lights And With The Switch But Now They Just...

All Of A Sudden My Left Driving Taillights Are Not Working. The Left Rear Turn Signal Works. The Left Rear Brake Light Works. The Left Rear...