Installation Instructions

REV. 11/2/2018 INSTAX-DSPHNS

ADDITIONAL WIRING & NOTES

AX-DSP-CH5: There will be an extra harness included that will need to be connected to allow

audio from the radio when installing the AX-DSP and a 4-channel ampliﬁer. Newer Chrysler

radios need a load on the speaker lines to provide audio out. This extra harness provides that

resistor load.

AX-DSP-FD2: If the vehicle is equipped with navigation and/or SYNC 3, connect the White and

White/Black wires from the 54-pin harness, (normally found at the LCD screen), to the White

and White/Black wires from the 20-pin harness. Then connect the 54-pin harness to the wiring

harness in the vehicle.

AX-DSP-GMLAN01: Some extra wiring to the factory harness will be required. The White and

White/Black wires from the 20-pin connector on the T-harness will need to be spliced into the

factory wiring. The splicing will be done at the Brown connector behind the radio, on the back

side of the connector (where the wires insert into the it). The wire cavities will be numbered.

Bear in mind that the colors from the Brown connector may not exactly match the picture.

• Connect the White wire from the 20-pin T-harness to pin-8 from the Brown factory

connector. (Figures A & B)

• Connect the White/Black wire from the 20-pin T-harness to pin-16 from the Brown factory

connector. (Figures A & B)

AX-DSP-HD2: Harley Davidson radios come pre-programmed with a preset EQ that cannot

be changed without ﬂashing the radio. Only an authorized Harley Davidson Dealer can ﬂash

the radio and ﬂatten the factory EQ curve. Ask the Dealer to ﬂash the radio to a ﬂat EQ curve.

Without performing this task, the AX-DSP will not sound proper, and be very distorted.

(Figure A)

(Figure B)