'99 Southwind - In dash radio problens

[RZRguy]

I have a '99 Southwind 32V, In dash radio has failure on driver side front speaker while engine running; when stopped at camp and engine is off all speakers work fine. Any ideas. Thx

[MrWizard]

Loose wire or power short to speaker side
Test it with an external add-on speaker spliced to the wiring at the back of the radio
Try it with key on but engine Not running, no engine no vibration
If it goes on/off when the key is switched, check the wiring harness

[Raist11]

Probably just a bad wire. Pop the speaker and head unit out and check connections. There really is no reason why engine running would impact speaker operation other than vibrating around possibly.