How to handle your bypass relay wiring diagram
Finding a solid bypass relay wiring diagram is usually the first step when you're trying to wire up a trailer or some heavy-duty accessories without frying your car's expensive computer. If you've ever looked at the back of a modern car and thought, "I'll just tap into those taillight wires," you might want to hold that thought. Modern vehicles are pretty sensitive, and adding extra bulbs or gear to a circuit that wasn't designed for it can trigger all sorts of dash lights or, worse, blow a control module. ...