Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Horn: Testing and Inspection

- Check the 20 Amp fuse in cavity 8 of the junction block
- Check the 20 Amp fuse located in cavity F of the PDC
- Press the horn switch and listen for the horn relay to click. A clicking relay indicates voltage is present up to the switch
- Check for a good ground at the right front frame rail.