JCJ,
Whelen has an extension cable for the P/A mic so you can mount your electronic box in the trunk area or under your seat. When you order you P/A from Whelen let them know you want that extension cable for the microphone.
Respectfully yours,
Gary
Finlayson, MN
www.FinancingYourHome.com/MyH2HUMMER.htm
www.FinancingYourHome.com