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R1250RT Seat heater repair

phandrews

phandrews
I managed to drop the loose rider seat off the bike causing the wiring to separate on the connector's seat side. The wires pulled out leaving me to wonder which wires came out of which two holes. I bought a repair kit from BMW. It has the yellow wires shown here that are labelled "1" and "2" to correspond with the tiny numbers on the seat side connector. The power side connector half (shown) has one brown and one purple wire, but it does not have corresponding numbers. I can GUESS by looking closely at the connector that the brown wire is "1", but I can't be positive.
So in the interest of not frying my Russel seat, can someone electrically talented confirm which wires are which? Also, I'm not sure how the supplied splicing bits are supposed to work. The plastic tubes seem a little thick for heat shrinking, and my big hands aren't good with those little metal crimps (I guess that's what they are). So I'm going to use Posi-Locks. Much easier. And I plan to add a tether to the seat so I don't suffer from this clumsy mistake again. Thanks in advance for any enlightenment provided.

IMG_4927.jpegIMG_4926.jpegIMG_4907 2.jpeg
 
Brown is ground, purple is the switched voltage. If nothing else is powered from this circuit, polarity won't really matter to the seat - it's just a loop of resistance ("heating element") wire.
If you don't have "the official crimping tool", a needle-nose pliers will accomplish the same thing, but I'd rather just solder them. Or crimp and solder.
The heat-shrink tubing seems "heavy" because it's probably heavier-duty, like "marine-grade"; snip off a little piece just to heat it up and see how small it gets, how quickly, with how much heat.
 
Hey - thanks for that. It's a relief to know I probably won't burn the thing up. I'm sticking with the Posi-Lock which seems pretty fool proof for the connection. Thanks again.
 
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