Rand McNally TND-740 magnet mount.

Just a side note... that is a TND-720, the model before the x30's.

 

Had it so long I can’t even remember what model it is. It just works.

 

We use RAM mounts, bolted to the dash or wherever. We use garmins so we just get the RAM ballmount that's appropriate, but you could use their X-grip to grab the GPS if you wanted. Great products. We've got one RAM mount for the GPS and another with the x-grip for the phone which we're using for an ELD. Super stable, bulledproof. nothing ever falls off. set it and forget it.

 

Rams work well also

 

those USB cables are tricky. Some devices (Garmins) require a cable that has the USB plug but has the datalines disabled. If there are data lines present they think it's time to hook to a computer, not charge & operate in the vehicle. You can modify a cable, but the whole thing's a PITA. Using a car charger with the appropriate length cable is fool proof. using phone USB charging solutions (though they have the same plug) can be problematic. I wasted a lot of time on this too.

 

On the RM's cord, Pins 1 and 5 are power, 2, 3, and 4 are the data pins. So if buying a Mini USB, make sure that is only has the two outer pins. You can look at it and see.

mark

 

My RM 740 always falls of on bad roads. Like it was mentioned before I need to go for a updated magnet and call RM.

 

Or mount it so it's flush with the dash. We had problems with it falling off daily till we tried that (suggested in the rand McNally thread in the electronics forum here), it hasn't fallen off once since.