[Mobile-Portable] Ford Excursion

[N5WV]

Hello Group  ,   Im new to this group so bare with me.  I have a 2003 Ford Excursion  6.0 diesel . I want to make a communications vehicle out of it similar to the ones used by the Red Cross.  The only modification that I have done so far is upgrading the alternator to a 250 amp unit.  But this vehicle has noise problems at HF. With cooler WX coming I want to get busy locating and taking care of the noise problems.  But this is new for me.  The only noise prevention suppresion work that I have ever done was install one of the cheap CB type of noise suppresion kits years ago. But I do understand that good grounding and sheilding is the bottom line.  But what I need to know are "the tricks of the trade" when it comes to locating and sniffing for noise problems ?  Better yet  ,   Is there anyone on this list that has done suppresion work on a Ford Excursion 6.0 diesel ?  Its a Eddie Bauer model so its loaded with every electrical option available.  If anyone can assist me please email me offline at    n5wv at comcast.net   .      Thanks ,   73   de  Randy     N5WV