The heating elements are sewn to the seat covers? Actually sewn to the leather, or to a fabric backing? I can wrench with the best of them, but not sure what kind of saddle making skill I possess

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I guess sewing in makes sense, keeps the elements in place. I was hoping it would be a simple swap. Any further info you can pass on Mark is appreciated.
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Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.