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
If it fails: lemon-manuals.org.ua

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Solar Sensor: Testing and Inspection





PHOTO SENSOR
1. In bright place, measure ampere between pin 2 and battery (-) terminal.
2. In dark place, measure ampere between pin 2 and battery (-) terminal.
3. Check the ampere in the bright place is higher than in the dark.

NOTE: The voltage is same as the ampere.