Battery Drain

[bcantell]

I nailed it down to the circuit that runs the radio, dash cluster.
I removed the radio, 6 disk player, thinking that might have been the drain cause the POS has a stuck disk and just keeps trying to load or unload. No love there.
I pulled the fuse and the drain stopped.
Pulled the fuse box and cleaned all the connectors under it, didn't see any corrosion.
I wouldn't care not using the circuit, but it appears the horn is on it.
Any suggestions on where to look?
Can't find a decent wire diagram to check individual wires.
Any help is appreciated.

 

[Rlaf75]

Try to get the disk out or replace that unit

 

[bcantell]

I pulled the radio/disk player out completely, but the drain still happens.

 

[LoneWolf3574]

IIRC that same circuit also has the cigarette lighter and power outlet on it as well. What year truck?

 

[Rlaf75]

Do you have anything plugged into the cigarette lighter or any of the USB ports? I ran into problems with a customer's car that had a constant draw on the battery and eventually it would blow the fuse It turned out to be a cheap $2 gas station cig lighter USB charging adapter that was causing all the problems. Just something else for you to consider