Hello everyone, first post here. i’ve recently found continuity between positive terminal connection and ground (pinpointed to 20A horn fuse) in my 1997 Chevy Express 1500 with a 5.7 in it. Was curious if anyone had the wiring for the horn to try and find where this is happening. Or any suggestions on how to find the problem would be appreciated!

 

and what exactly is the problem you are experiencing with your van?

 

Here is the schematics for a 1998 Express wich should be similar.

Good luck