Suzuki Wagon R Manual page 907

8D-16 WINDOWS, MIRRORS, SECURITY AND LOCKS
DEFOGGER CIRCUIT REPAIR
1) Use white gasoline for cleaning.
2) Apply masking tape (1) at both upper and lower sides of heat
wire (3) to be repaired.
3) Apply commercially-available repair agent (4) with a fine-tip
brush (2).
4) Two to three minutes later, remove masking tapes (1) previously
applied.
5) Leave repaired heat wire (3) as it is for at least 24 hours before
operating defogger again.