My nav keeps going in and out of signal every five minutes religously for the past 2 weeks..Anyone else have this problem or know a fix??
THANKS

 

Make sure you did not squash the GPS wire behind the radio when you installed it. You need to be sure the cable is positioned in the slot under the head and does not pile up behind when you are screwing the NAV back down. It is easy to short the cable this way (I know - I did it), Pull the head and if the foam on the wire is flattened out that's likely your problem.