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High-Voltage Power Amplifier Operation 

Default Setting:  

Low Beam Mode

High-Voltage Power Amplifier Mode Selection
Use the 

Mode Select

 button on the high-voltage power amplifier to toggle through the different lighting modes (from 

Low Beam Mode

 to 

High Beam 

Mode 

to 

Daytime Mode

).

A B C D

Connector

Channel Default Connection

Default Setting

A

1

Low Beam Headlights

On

2

High Beam Headlights

Off

B

3

Not used

N/A

4

Not used

N/A

C

5

Tail Lights

On

6

Brake Lights

On when braking

D

7

Reverse Lights

On when reversing

8

Not used

N/A

Connector

Channel Default Connection

Low Beam Mode

High Beam Mode

Daytime Mode

A

1

Front Low Beam Headlights

On

Off

Off

2

Front High Beam Headlights

Off

On

Off

B

3

Not used

N/A

N/A

N/A

4

Not used

N/A

N/A

N/A

C

5

Tail Lights

On

On

Off

6

Brake Lights

On when braking

On when braking

On when braking

D

7

Reverse Lights

On when reversing On when reversing On when reversing

8

Not used

N/A

N/A

N/A

Change the high-voltage power amplifier settings and gain access to 

additional functions using the Traxxas Link App (available in the Apple 

App Store

SM

 or on Google Play™). The TQi transmitter with the Traxxas 

Link Wireless Module (part #6511, sold separately) are required. 

Mode Select 

Button

This device complies with FCC Part 15 & IC RSS-210 rules subject to the following conditions: (1) This device may 
not cause harmful interference, and (2) This device must accept all interference received, including interference 
that may cause undesired operation.
App Store is a service mark of Apple Inc. Google Play is a trademark of Google Inc. 

Front Light Bar Wiring routed to  

High-Voltage Power Amplifier

Rear Light Bar Wiring/Long Extension Harness 

installed on Rear Light Bar Mount

High-Voltage Power Amplifier with  

Short Extension Harness installed

Summary of Contents for 7885

Page 1: ...nector into the high voltage power amplifier port A white Fig 4 3 Install the rear LED light bar mount C on the truck body using the included 3x10mm flat head screws 2 4 Attach the rear LED light bar D to the mount using the included 2 5x10mm button head cap screws 2 5 Route the connectors from the rear light bar through the larger reamed hole to the inside of the truck body Plug the connectors re...

Page 2: ...ront LED Light Bar Wiring High Voltage Power Amplifier Wiring Extension Harness Rear LED Light Bar Wiring Wiring Diagram Fig 6 D B A Assembly Diagram C Fig 5 3x12mm BCS 2 5x10mm BCS 3x10mm FCS 2 5x10mm BCS 3x10mm FCS 3x12mm BCS 3x8mm CS 3x8mm CS CHASSIS BODY ...

Page 3: ... On when braking On when braking On when braking D 7 Reverse Lights On when reversing On when reversing On when reversing 8 Not used N A N A N A Change the high voltage power amplifier settings and gain access to additional functions using the Traxxas Link App available in the Apple App StoreSM or on Google Play The TQi transmitter with the Traxxas Link Wireless Module part 6511 sold separately ar...

Page 4: ...c components for a flat rate Please visit Traxxas com support for a current schedule of warranty costs and fees The covered repairs are limited to non mechanical components that have NOT been subjected to abuse misuse or neglect Products damaged by intentional abuse misuse or neglect may be subject to additional charges Traxxas liability in no case shall be greater than the actual purchase price o...

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