Horn Switch Test
  1. Using a jumper wire, connect the No. 10 terminal of the combination switch harness 20P connector to body ground.
    • If the horns sound, go to Step 4 .
    • If the horns do not sound, check these items:
      • -
      No. 21 (15 A) fuse in the under-hood fuse/relay box.
      -
      Horn relay (with security).
      -
      Horns.
      -
      An open in the wire.