Ok, I backed my truck out of my shop to idle it for awhile to check on what was leaking from my turbo gasket when the PacBrake in on, I had noticed that when I shut off ignition my low fuel pressure light on my gauge would stay on as well as my "brake" light was also dimly lit, well while idling yesterday the "Airbag" light came on, I switched the Pass airbag off and the light went out, so I figure I have something in that circuit wrong, then I notice my blower fan was staying on with ignition off, as if these issues wasn't enough all the dash lights came on "check engine" "check gauges" as well as "no bus" in the odometer  Haven't even started to dig into this, not sure where even where to start. Any advise?

I'd be looking at the wiring under the dash and Joint Connector No. 8.  The power for the blower motor relay solenoid and air bag go through there.  Joint Connector No. 7 is where the instrument cluster bus goes through.  

 

In the 2001 FSM see pages:  802, 8W-12-17, JUNCTION BLOCK

                                               915, 8W-42-2, BLOWER MOTOR

                                               921, 8W-43-2, AIR BAG

                                               1118, 8W-90-27 No.8 CONNECTOR LOCATION

                                               905, 8W-40-4 INSTRUMENT CLUSTER BUS

                                               1119, 8W-90-28 No.7 CONNECTION LOCATION 

Thanks , following diagrams isn't my strong suit, but I'm getting better at it.  Yea, it all happened in the span of 10-15mins while I was sitting in truck.

57 minutes ago, Blueox01 said:

following diagrams isn't my strong suit,

Following a wire diagram is like reading a road map once you learn what the diagram legend/symbols are for. 

1 minute ago, IBMobile said:

Following a wire diagram is like reading a road map once you learn what the diagram legend/symbols are for. 

I can read a road map fantastic. Like you said it's getting to know symbols.  Just knowing the place to start really helps.