SECTION II
TESTING/REPLACING THE LAMP
A. Remove the facecap from the Vulcan as described in Section I.
B. Carefully lift the lamp/reflector assembly away from the Vulcan body.
C. There are two different styles of bulbs. The single filament bulbs have two leads. Dual
filament bulbs have three leads.
Note: The single and dual filament bulbs are not interchangeable. Follow the instructions
below to test or replace the bulb.
1. Test the bulb.
Dual Filament
Common Lead
Single Filament
a. Unscrew the threaded bulb socket from the reflector.
b. Pull the old bulb straight out from the socket.
c. Use a multimeter in the continuity position.
(1). For single filament (bi-pin) bulbs place a meter lead on each bulb lead (a
beep or continuity indicates a good bulb).
(2). For dual filament bulbs (three pin) first establish the common lead (the
common lead connects with the long filament support visible inside the
bulb). Place one meter lead on the common lead and then test each of
the remaining leads (a beep or continuity indicates a good bulb).
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