Hello all. New guy here. Just picked up an 89 d150 4x4 last night to use as a farm beater. Truck started out running rough but was drivable then it just completely quit. Thought it was spark issues and its a lot more than that. I have power to the coil and fuel pump with the key shut off. As soon as I flip the key over to start it all power is gone. I know I can put the pump on a toggle switch but can I put the coil on one also. If I'm having these issues is there possibly something else wrong causing all this nonsense? Im in the doghouse big time with the wifey over this because of a $91 tow bill to get it the rest of the way home. I've always had carbed engines without all this electrical stuff on it so I'm not sure where to start. Any help is greatly appreciated.