I looked at this thread last night and dug out my service manual. There are pics of the door relay mounted in both positions, so that's a bit confusing. I haven't looked at my doors to see which way they're mounted, although my truck is a '51. I'm assuming they changed with the outside door handle change to pushbutton type in '52.

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.