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1

Read Me First!

Installation of this product is a simple procedure,

but we recommend this job only if you are an

experienced repair technician.

Preliminary

Widen the endpin hole to 

15

32

” (11.9mm) to

accommodate the endpin jack.

If using the Powerjack with new pickup, install pickup 
according to its provided instructions.

Installation

Observe the following 

precaution!

•  Do not overheat the solder pads! Doing so 

may lift the pads from the circuit board.

Solder the wire connections

1. Unscrew the shielding cap to access the preamp 

circuit board.

2. Strip ¼” off the outside jacket of the pickup wire. 

Tin both the inner conductor and the ground wire.

3. Thread the pickup wire through the shielding cap.

4. Thread the pickup wire through the largest of the 

three strain relief holes, then solder the signal wire 
from the pickup (hot wire) to the pad marked “IN” 
on the preamp circuit board. Solder the ground wire 
from the pickup (shield) to the adjacent pad marked 

“G” on the preamp circuit board (fi gure 1).

5. Fasten the shielding cap to the jack. Be careful 
not to allow the shielding cap to come in contact 
with the end of the circuit board.

6. Lock the shielding cap to the fi rst large hex nut.

Endpin jack

Install the endpin jack per Switchjack Installation 
Guide.

Battery bag

Install the battery bag on or near the neck block 
(fi gure 2).

1. Clean the area where you will mount the bag

with an alcohol wipe or cotton swab moistened
with rubbing alcohol. Let dry.

2. Peel off the plastic fi lm from the Velcro patch and 
attach the bag at the chosen location.

POWERJACK
INSTALLATION GUIDE

REV. 2.3

PJ FISHMAN

+

G

IN

R

-

Pickup Signal

to "IN"

Pickup Shield

to Ground ("G")

G

G

NIIN

R

NI

G

R

IN

G

SI

F
H

M

A

N

P

O

W

ER

AJ

C

K

FIS

H

M

A

N

P

O

W

E

R

JA

C

K

Battery Bag

Pickup

Powerjack

Figure 1

Figure 2

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