Curious if anyone else has experienced this, and if there is a fix.
My speed hut/FFR vintage gps speedometer occasionally will have its needle swinging up and down all over the place.
I’ve only noticed it at higher speeds at or around 120km/h and when heading directly north or south. North seems to be worse. Will do it for a while then get a small curve in the road and it will go away.
My GPS antenna is on top of the driver foot box, all the way forward, about 14” in front of the windshield so pretty far from having any metal above it to block the signal.
Anyone experienced this or have any ideas?