Isuzu Repair: Electrical problem???, isuzu rodeo, electrical problem

Question
My son has a 1998 Isuzu Rodeo. He has not been having any problems. He went to start her up to go  to school and nothing, no lights, not power anywhere, only one small click when he try to start it. We check the battery and I replaced the terminals and still nothing. Could it be a fuse or do you have any ideas. Thanks in advance. Ken

Answer
It could be a loose connection on your main wiring harness, and yess check all your main fuses and ignition relay. Rodeo's are horrible for their electrical problems. Especially check for any loose grounds in your engine bay as well ok? let me know how this goes.