Connect the positive plug of the battery to a conclusion "1", and the negative plug – to a conclusion "2".

Fig. 7.78. Scheme of check of an internal rear-view mirror

Stick with a black tape (see fig. 7.78) the sensor of light of an internal rear-view mirror.

Light a mirror with a lamp and check whether the mirror will be darkened.

If blackout does not occur, replace an internal mirror.