Running GPS and CB through the same speakers .

[Sir James]

Iv'e removed the head unit from a vehicle and have spare speakers and power cable , i want to use the ignition power for my Sat Nav and CB , which works fine , however i would like to use the obsolete door speakers for the CB and Sat Nav aswell . Will having both units powered up and using the speakers at the same time cause damage to each other
Can a CB radio message travell back up the speaker wire into the Garman or vis versa ,if so is there something available to prevent it

TIA......................JB

 

[Sir James]

PS .............. Will hundreds and thousands discolour the cream on my triffle if left over night , or should i sprinkle before serving