ACCURAT Opti 5 Operating Manual page 45

Charging Instructions
Negatively earthed (most vehicles)
Connect the RED lead (battery clip) from the charger to the Positive
(+) battery terminal. Connect the BLACK lead (battery clip) from the
charger to the vehicle's chassis away from the fuel line or moving
parts.
Positively earthed
Connect the BLACK lead (battery clip) from the charger to the Nega-
tive (-) battery terminal. Connect the RED lead (battery clip) from the
charger to the vehicle's chassis away from the fuel line or moving
parts.
F A N
F A N
45
Black
Red
Connection inside
vehicle (negatively earthed)
Black
Connection inside
vehicle (positively earthed)
Red