Fuse Block No power to BAT fuse connector

[Charkmapman]

1987 GMC R3500,STD, 350
I have done a slight error. Had power from top BAT connection on fuse block to power rotating beacon on cab. Like a dummy I did not inline fuse it. Yep, shorted out. Now I have no power to the connections under BAT. thought it could be fusible link? Circuit breaker? but I do not see one. Any suggestions on how to fix this. Truck runs, other circuits good. power to other connections with key on. unhooked battery, then reconnected thinking circuit breaker. no joy. Terminals marked "C" in diagram. Thank you in advance.

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[Jgonick]

should be protected by the horn/DM fuse (20 amp)

Check it to make sure it's not blown.

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[Charkmapman]

Outstanding !! That was it. Thought I had checked them.... Thank you!

 

[AuroraGirl]

should be protected by the horn/DM fuse (20 amp)

Check it to make sure it's not blown.

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didnt realize the taps were fused first ,. thats good to know. so all those labled B in your diagram are fused by Horn/DM?

 

[Jgonick]

Yes, I believe so. This one is 85, I labeled where the feeds come into the fuse box based on a wiring diagram.
Helped me with diagnosing some problems knowing where they came from and where they entered the fuse box.

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[PrairieDrifter]

The cigarette lighter and courtesy light are on the same circuit as well.

 

[Charkmapman]

Thanks to all. Great information!