Yamaha FZR400 1988-1989 Service Manual page 304

I
CHECKING OF BULBS ITiETiil
2. Check the bulb terminals for continuity.
Checking steps:
*Connect the tester leads to the respective bulb
terminals. Take for example a 3-terminal bulb
as shown left. First check the continuity be-
tween the @ and @ terminals by connect-
ing the tester ( + 1 lead to the @ terminal and
the tester ( - ) lead to the @ terminal. Then
check the continuity between the @ and @
terminals by connecting the tester ( + ) lead
still to the @ terminal and the tester ( - 1 lead
to the @ terminal. If the tester shows "a"
in either case, replace the bulb.
3. Check the bulb socket by installing a proven
bulb to it. As in the checking of bulbs, con-
nect the pocket tester leads to the respective
leads of the socket and check for continuity
in the same manner as mentioned above.
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