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)

Or, hide this message: temporarily or permanently

Breakout Box

Universal Breakout Box:






DESCRIPTION
A breakout box to test individual circuits in the system by monitoring voltage or resistance using a high impedance multimeter. It can also be used for pinout circuit checks by disconnecting the option adapters at the vehicle system control module.