#4. Connecting wires - Solar panels are connected in either Series or parallel connecting for making an array, An Array is the form in which multiple solar panels are connected, Hence, It is important the solar should come with at least 1 meter wire and with IP 68 Junction box https://ecologiasolar.eu/circuitos-solo-con-diodos-sencillos-en-proto-placas-para-practicar/