I just decided to add more lights to my front end loader the electrical system is 24vdc, that might explain why the previous owner added a radio and blew it up. So how do I go down 12volts? I priced a transformer from radio shack and it was $120. That seems outrageous, I can get a 120 vac-24vdc 40 amp for around $8 dollars from grainger? I am looking to add some lights and a radio so lights are around 10 amps a set and the radio should be 10 amps right?