Does anyone have a wiring diagram for the heated seats on a 90 740ti? Leather with the relay attached under the seat, black, marked leather. I have pulled the varous components, the switch works, the relay looks good, soldering etc. Ohm meter seemed in spec for the pads (though I did not fully access them-not at least until the simple things are ruled out.

I am guessing that to the relay there are two pos. wires, one low amp through the switch and one high amp to the relay. The low amp one seems to go the the fuse panel via the switch. Where does the high amp one go and is it fused? I would appear as though I do not have voltage to the high amp lead.

I am also a little confused re where the leads go after the relay ie seat bottom or back, they all appear to be black.

Help would be appreciated as my tender old backside is starting to get cold.
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90 740 ti