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Using Your Fish Tuning Digital DSP5 Switch 

The first section covers the functions of the switch when the ignition is on. The second section covers 
configuring the switch by pressing buttons while you turn on the ignition. 

The Features of Your New Digital DSP5 Switch 

  Instantly change to any tune with one button press 

  Lock it in any tune till the password is entered 

  Always be on your chosen tune when you turn the key on. No more cold morning starts on the wrong tune! 

  May be configured to start with a passwor

d required so strangers can’t easily change tunes 

  Wired Valet mode on LB7 and LLY trucks 

  Simulated Valet mode on LBZ and LMM trucks 

  A high idle function for implementing the built-in high idle function GM put in LB7, LLY and LBZ trucks 

  Supports 1-5 and 5-1 tuning so your small tune can always be on position 1 and your big tune on position 5 

Document conventions 

  Button presses will be shown using: 

1

2

3

4

 or 

5

  The current display will be shown using: 

A

B

H

L

U

a

K

n

, etc.... 

Default Settings 

  Start locked off 

  Password set to: 1, 2, 3, 4 

  Password length set to four 

  Valet tune set to 5 

  Tune reverse feature turned off 

Lock Mode 

  Any time you see an 

L

 or a 

U

 displayed, the switch is locked. 

U

 

means you’re in valet mode and 

L

 

just means it’s 

locked. 

  If a 

U

 is displayed you must enter the lock code to return the switch to normal operation. 

  If an 

L

 is displayed and the switch has start locked enabled, you must enter the lock code to exit 

  If an 

L

 is displayed and the switch does not have start locked enabled, you may enter the password or turn off the 

power to exit. 

Button Combinations That Work With the Ignition On 

Changing Tunes 

  Press any single button to instantly switch tunes. The display will indicate the current tune. 

  Press and hold any single button until the display changes to 

P

 

and

 

the

 

switch will be locked in that tune until you 

enter the lock code. This lasts even through key off/key on cycles and overrides the default start up tune. As soon 
as you enter the password this will be forgotten. This mode restricts access to the valet and high idle modes. This is 
called tune locked mode. 

Adjusting Brightness 

  Press buttons 

1

 and 

2

 together to increase brightness. 

  Press buttons 

4

 and 

5

 together to decrease brightness. 

  30 seconds after the last adjustment, the setting will be saved. 

Summary of Contents for DSP5

Page 1: ...word length set to four Valet tune set to 5 Tune reverse feature turned off Lock Mode Any time you see an L or a U displayed the switch is locked U means you re in valet mode and L just means it s locked If a U is displayed you must enter the lock code to return the switch to normal operation If an L is displayed and the switch has start locked enabled you must enter the lock code to exit If an L ...

Page 2: ...dle pulls the yellow wire to 12V Exit high idle mode by pressing a button to select a tune High idle is persistent so if you enable high idle just before turning off the truck it will still be enabled when you next start the truck Perfect for remote starts in the morning or getting the cab cooled off on a hot day If your switch is set to start locked it will start in high idle mode The first press...

Page 3: ...ach time you do this the state will toggle A small letter r or n will show up telling you if the state has been set to normal or reversed The Password The default password is 1 2 3 4 1 2 3 4 If your password is less than eight digits long you will only need to enter the first password length digits of the password The password length may be set to anything between four and eight characters long Wh...

Page 4: ...We recommend disconnecting the battery before unplugging the connectors from the ECM There are four or five wires to hook up Connect the black wire to a good ground Connect the red wire to switched 12V Connect the yellow wire to the valet pin on your ECM Not available on LBZ or LMM Connect the orange wire to the high idle pin or pins on your ECM Not available on LMM Note that this wire connects to...

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