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L.O.C.PRO™

™ 

LP7-4

Line Output Converter

Before You Start

Replacing your radio? PAC also produces RadioPRO

™ 

which is a radio replacement solution, with steering wheel

control retention built-in. This greatly expedites the installation of a new radio into your vehicle. 
To see if there is a RadioPRO

 interface for your vehicle, visit 

www.pac-audio.com

 and search "Radio PRO". 

Installation Instructions

The professional way to integrate 

your new amplifier or radio.

General Overview 

Install It Right with L.O.C. PRO

 

Don’t cheat yourself out of all the performance your new radio or amplifier can deliver. Proper audio line level 
matching is critical when replacing your vehicle’s factory (OEM) radio or amplifier. It can be the difference 

between a great sounding system that you enjoy every day and a buggy, noisy mess that drives you crazy.   
PAC L.O.C.PRO™ interfaces have been professionally designed for those who want the very best.

The L.O.C.PRO™ LP7-4 can be used for either replacing an OEM radio and retaining the factory amplified 
system or adding amplifiers to a system that does not have RCA outputs. L.O.C.PRO™ LP7-4 will also monitor 
the audio input signal and automatically create an amplifier turn-on for systems that do not have one. Level 

matching is achieved using precision stereo gain dials and will enable proper adjustment of audio output of the 
radio for optimum system performance. Differential inputs also allow for use in OEM BOSE and other premium 

system scenarios. Included in these instructions are the most common applications for the L.O.C.PRO™ LP7-4. 

For specialty applications not covered in this manual, please visit 

www.pac-audio.com

 for more comprehensive, 

vehicle specific wiring diagrams. Direct url - 

www.pac-audio.com/products/locpro

Speaker Level Input to RCA Level Output

Speaker level input to RCA level output is the most commonly used configuration for the LP7-4.

Use this when you need to create RCA level outputs from a source that only has speaker level outputs. 
The RCA input connectors on the main harness will not be utilized for this type of installation, we suggest 
cutting them off the harness 3 inches from the RCA end so they can be saved and used for a future installation.       
After all the connections are made on the remaining wires, skip to the level adjustment section of this manual.

Cut away RCA ends for wired speaker level inputs

Copyright 2013 Pacific Accessory Corporation. Content subject to change without notice.

Rear Left Output

Rear Right Output

Front Left Output

Front Right Output

R

emote 12v

 + 

Output (

500ma

)

Constant 12v + Input

Front Right Audio Input

Rear Right Audio Input

Rear Left Audio Input

Front Left Audio Input

C

hassis Ground -

Audio Ground Input -

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OPTIONAL

)

Note: 

 

If using large RCA connectors that are difficult to insert into housing, unsnap the    

 

 

 

 

L.O.C.PRO™ cover and remove end panel insert around RCA outputs.

3"

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