Turn signals keep blowing fuse

Hello,

The reason that any fuse blows in an automotive application is a short to ground of the circuit that the fuse is protecting. This happens because of Ohm's law, the law that governs electricity in your vehicle. Ohm's law states that if one of the three properties of electricity is constant, and one always is in a vehicle(Voltage-Battery 12.6V), and one of the other two properties goes down(Resistance-Short to ground creates a direct path back to battery negative so resistance drops to zero), than the last property(Amperage-Amperage must go to battery cranking amps) MUST go up proportionally. As the amperage increases to the limit, which is the cranking amps of the battery, it exceeds the fuse rating, and "Pop", the fuse blows, protecting the circuit. In the diagrams down below I have included a guide for how to find a short circuit in an automotive electrical circuit. Please go through this guide and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros