DiMarzio Model J™ and Ultra Jazz™
Important: Read all of the following instructions before proceeding. If any
questions or problems arise, you may refer them directly to us.
Your new pickup is a direct replacement for the original pickups in all
Jazz Basses. (No modification to the Jazz Bass is necessary for
installation.) The installation of an optional miniature switch will
provide the pickup with series/parallel. Phase reversal is also
possible. Further information on the options is available direct from
DiMarzio, Inc.
REMOVING THE ORIGINAL PICKUP
The front pickup will be called pickup one; the bridge pickup will be
called pickup two. Loosen or remove the strings. Unscrew all screws
fastening the pickguard to the bass and carefully remove the
pickguard. Unscrew the screws holding down the control plate and
carefully turn it over so that the controls are exposed. Unsolder the
pickup leads from the volume pots. The hot lead is connected to the
#2 leg of the pot. The ground is connected to the back of the pot. Be
careful not to disconnect the other ground wire from the back of
volume pot #2. Pickup one is connected to volume pot #1, pickup two
to volume pot #2. Unscrew the four screws holding each pickup in
place and remove the original pickups. You are now ready to install
the new pickups.
INSTALLING THE NEW PICKUPS
It will be necessary to remove the foam rubber which is attached to
the plate beneath the pickups, as the new pickups are slightly deeper
than the original. Cut a smaller piece of the packing foam, about 3" x
5/8", and place it beneath each of the pickups to give them some
cushioning. Install the pickups in their respective compartments and
run all four wires from each through to the control compartment.
Screw the pickup in with the original mounting screws.
WIRING THE PICKUPS
Solder the red wire of each pickup to leg #2 of its respective volume
pot. Solder the green wire of each pickup to the back of its respective
volume pot. Solder the black and white wire of each pickup together.
Put a piece of tape on this connection so that it does not touch any
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D i M a r z i o . c o m
5/6/2004
http://www.dimarzio.com/install/ultra_jazz.html
