I have lost all power. Nothing to the key, lights or anything. I have replaced both, what I call the brain on the inner wheel well and the microprosseser on the inner fender by the solonoid. I also checked the fusable links that are on the passenger side by the battery and all seem good. I cleaned the ground. There is power to the solonoid but that is where it seems to stop. I cant find the problem I need help on what to do next.

 

There should be a smaller wire on the large starter solenoid terminal that goes to the battery +. This is the wire that feeds the whole truck. It should have a fusible link on it, right at the end where it connects. Then after this, it goes down to the other fusible links where it spreads the power over the whole truck.

Also, are you putting your tester ground on the sheetmetal and the engine block, or the the battery neg. If you use the battery neg, and get voltage, but don't get voltage using the engine block, then you might have a bad ground cable.

 

found it small wire connected to the hot side of the solonoid had broke off at the connection