I have a GW1800 2008. Radio/intercom does not play through helmet. The displays look correct. The radio plays through the speakers, but not through the helmet speakers. All was working fine until this year. radio plays through speakers. Switched cables and helmets. Still no play. Like to know how to get to connectors on the radio to see if it has come loose. I'm fairley handy and used to do all work on my previous bikes before they encased them in plastic. I don't have a shop manual, yet. So if someone can direct me to a site or walk me through the steps to remove enough plastic to check the connectors, I'd appreciate it. Thanks.