Owner's Manual

FREQUENTLY ASKED QUESTIONS

I have your radio with an amp connected, but hear a

whining/buzzing sound through the speakers when I step

on the accelerator.

If you have an external amplier installed and experience a high-

pitched noise that varies with the engine’s RPM, there are many

possible solutions:

• Make sure the amplier’s gain controls are not turned all

the way up. Ampliers amplify everything, including noise.

• Try grounding the amplier near where it is installed.

• Try a lter on the amplier’s 12 volt power lead. Make

sure to use a lter that includes a ground wire.

• On rare occasions, noise can be introduced through

the antenna lead. If disconnecting the antenna makes

the noise go away, you need to replace or repair

the antenna plug where it goes into the radio.

When I plug in my ash drive the screen says USB ERR,

and it won’t play the les I placed on the drive.

• Make sure the les on the drive are .mp3 or unprotected

.wma (Windows Media Audio) les. iTunes les are

.m4a format and need to be converted to .mp3

format, which can easily be done using iTunes.

• Verify the capacity of the ash drive. Motor

4 will play 1 gig to 32 gig ash drives.

• Make sure the ash drive is not NTFS formatted. Always

use the FAT32 format (most drives are formatted with

FAT32 from the factory). Be sure to do a full format rather

than a quick format, and check that none of the les or

folders have names longer than 64 characters. It is very

important that none of the audio les have DRM. Use only

MP3 les or unprotected Windows Media format les.