Hello everyone. I am fairly new to F150 online and I appreciate reading the help we get from other members to diagnose our truck's problems. I am having electrical issues with my 2005 F150 XLT 5.4L truck. I have P3505 (I think this was the code) but it is saying Cylinder 5 misfire. Also, the battery keeps dying and plan to put a new one in today, hopefully. Howevre, with the battery dead I hear a weird clicking sound around my truck. Idk what that noise could be coming from???

Another thing is the wiring under the driver side body became loose. I used tiedown straps to hold it back together. Could any one tell me what that wire is, and what I have to do to secure it better underneath the body???

Any help will be greatly appreciated.