caused by ground loops which happens when the audio source and the speaker use the same power source in some car speakers / home stereo systems when using the Bluetooth receiver
Ridgid 58622 Wheel Housing
it can provide protection against injury by pointed rod and tubing edges
Filling : Glycerin filled
ASC Car Stereo Speaker Power Wire Harness Plug for select Dual Audio 16 Pin w/ Mic Input Radio- XDMA6415 , XDMA6630 , XDMA6540 , XML8150 , XDMA7800 , XDMA7600 , XDMA7200 , X2DMA500 auspowers_batchtwo caused by ground loops whichASC Car Stereo Speaker Power Wire Harness Plug for select Dual Audio 16 Pin w Mic Input Radio XDMA6415 , XDMA6630 , XDMA6540 , XML8150 , XDMA7800 , XDMA7600 , XDMA7200 , X2DMA500 Wire harness and speaker Plug made to work as replacement for your Dual Audio radio, stereo CD player, MP3 radio indash unit. XDMA6415 , XDMA6630 , XDMA6540 , XML8150 , XDMA7800 , XDMA7600 , XDMA7200 , X2DMA500 Product Features Power Ground 4 Speaker Plugs into car radio 16