Hitachi FDV 16VB2 Technical Data And Service Manual page 17

(2) For models with noise suppressor and without choke coils
For noise
suppressor (Black)
For cord
(Blue or white)
(White)
(Brown)
Connection of internal wires to the switch
(4)
(Blue)
(Brown)
(3)
Forward/reverse
push-button section
(Gray)
(Red)
For cord
(Brown or black)
(Blue)
(Black)
(Black)
(Gray)
ST
(1)
(M1)
(C1)
Noise
suppressor
(C2)
ST
(2)
(White) (Red)
(M2)
Main switch section
Wiring diagram
(Black)
Housing (A)
side
(Gray)
Connection of internal wires to the stator
(Viewed from commutator side)
(Brown)
(Red)
Noise suppressor
(Brown or black)
(1 )
Cord
(Blue or white)
(2 )
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(Red)
Housing (B) side
(White)
(Gray)
Cord
Wiring diagram
(Blue)
(White)
Switch