Yes, I sent it to you in an earlier reply, but here is the wiring diagram again, just in case. The fuse is blowing because you have a short to ground in the circuit, before the load, that the fuse is protecting. This happens because of Ohm's law, which is the law that governs electricity. One of Ohm's laws states that if one of the three properties of electricity is constant[Voltage - Battery Voltage] and then one of the remaining two goes down[Resistance = With a short to ground before the load in a circuit resistance drops to zero as there is now a direct path back to the battery's negative terminal] then the last property must go up proportionally[Amperage - Amperage/Current goes to amperage rating of the battery]. The amperage immediately exceeds the fuses amperage rating and "Pop", the fuse blows, creating an open in the circuit, stopping the electrical flow and protecting the circuit and the load[or component] that the circuit was designed to run. I have also included a guide on how to find short to grounds for you as well. Please get back to us with what you find out.
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Friday, February 14th, 2020 AT 8:07 AM