Barcus Berry 1457XL - Manual (Page 6)

Installation for the 1455-3 Insider
TO INSTALL THE TRANSDUCER:
The bottom surface of the INSIDER is covered with a
special foam strip adhesive by which it may be affixed to
the inner surface of the guitar top. To make this installa-
tion, first loosen the strings on the guitar so that access
to the inside of the instruments is possible through the
sound hole. Peel the protective paper covering from
the adhesive strip. Then insert the pickup into the instru-