I have a parasitic drain on my battery. In trying to track it down, I must have done something because my horn stopped working and my ammeter is in the discharge side, always. I pulled the wire that powers the radio memory, but when I went to plug it back in, (as I was driving) I missed the proper aux spade in the fuse block and I saw sparks. After that no horn. There are some other wires that are spliced in and also connect with the radio memory. I am not sure what they are for. I checked and the fuses and the fuseable links all look intact. I think it may be the horn relay. Is there a test to check that relay? Maybe I missed something even more obvious. I have been disconnecting the battery at night and putting the charger on the battery. Maybe I damaged the voltage reg., too when I shorted out the memory connector? I am just lost what to do nest.