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The switched GPS plug is fused at 15A, easily enough for a GPS unit but maybe not for heated grips, you'll have to check. The plug on the end is a strange one. It's supposed to connect to the mating socket molded into the dock for the TomTom Rider. Because it's nearly impossible to find a mating socket, most folks cut off the plug and wire up something more universal, like an SAE connector. However, for purists, it is possible to obtain a matching socket so you don't have to alter your bike's wiring (thanks to "pauldaytona" at Guzzidiag for the info). It is part of a Mercedes Benz short (5") extension cable that connects the outside temperature sensor to the car's electrical system on some models. There's a socket on one end that mates with the MG GPS plug, and a matching plug, identical to the MG plug, on the other end. It's Mercedes part number 230-540-01-66. I got mine from Autonation http://www.autonationpartsdirect.com for about $22 including shipping.