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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Delco-Bose (R) System Operation
On GM DELCO-BOSE (R) systems the radio passes low power audio signals to the RIM, which distributes the signal to each of the four speaker/
amplifier assemblies for amplification and broadcast. The BOSE (R) speaker amplifiers are powered up from the relay center located on the left trunk electronics bay board when power is applied to the radio receiver.