Originally Posted by SSCULLY
These are not all on the same fuse.
Fuse #24 feeds the battery saver relay ( relay 304 ) which powers the interior lamps. The coil is controlled by the instrument cluster.
The Power Windows and radio are on the accessory delay relay ( relay #02 ) :
output of the accessory delay relay to the radio is Fuse #22 and the output of the accessory delay relay to the power windows is fuse #401. The other side of the normally open contacts on the accessory delay relay is always hot, and the coil on this relay is controlled by the instrument cluster.
If you want to bypass the relay, to see if the items work, pull the relay, and jumper the normally open contacts as shown in the drawing below
Have you done anything with the instrument cluster ( this is the item in common with both relays ). This includes removal or replacement for any reason ( overlay, LED bulb swap, etc ).
I found this very helpful. Thanks for the diagrams.
I'm hoping to delve a little further into this.
My truck did the same thing when I was trying to change the dome light.
The truck is a 2005 Lariet supercrew 2wd.
The truck was running with A/C, radio, and headlights on. As i tried to twist the dome light bulb into position, I heard a snap and the interior dome lights went out. So did the A/C clutch, raido, all gauges (but not the back-lighting),power windows/moonroof, and the driver airbag light is blinking.
At this point I've checked examined all fuses, and ohm tested them.
I learned from this thread (again, thanks SSCULLY) how to properly test for power to the fuses by leaving the fuse in it's holder.
I need to do this yet.
However, I have determined that Relay R02 isn't getting power to the socket.
By swapping in other known good relays, and using the original R02 relay in another relay socket -- it powers up.
I'm a little afraid to try bridging 30 & 87 for fear I might cause a short.