While checking over my newly purchased 89 244 for inspection, I found an odd problem---the brake lights and parking lights were reversed, that is, the small filament in the 2 filament bulb would light when the pedal was pushed, and the large filament would come on with the headlight switch. Fortunately, the solution turned out to be quite simple. I noticed that one of the bulb sockets was white, unlike all the others, which are black. On a hunch, I swapped them, and things were back to normal. I suspect the previous owner had them both out at the saem time, and put them back on the wrong sides. The correct orientation is easy to remember---WHITE on the RIGHT.

Excellent advice!! Clears up a mystery for myself also.
Do you mean 'right' as in passenger side (looking at the car from behind or 'right', driver's side (looking at the car from the front)?
Thanks.

I figured someone would find this useful, especially as it is an easy mistake to make, if you're not paying attention when dealing with more than one burned out bulb at a time, or, like me, have just purchased a car and discovered weird things going on with the lights....

Right or Left: The generally accepted convention that it is the same as your right or left, when you are sitting in the drivers seat. For example, US cars are described as LHD (left hand drive) and British ones are RHD (right hand drive)

Right side = passenger side.
At least here in North America it does.

And yes, the white one goes on the right.
Owners manual says so too, if you are lucky enough to have one.
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Sven: '89 245 NA, 951 ECU, expanded air dam, forward belly pan reaches oem belly pan, airbox heater upgraded, E-fan, 205/65-15 at 50 psi, IPD sways, no a/c-p/s belt, E-Codes, amber front corner reflectors, aero front face, quad horns, tach, small clock.

A local junkyard guy here near Philly used to say "mommy side or daddy side?".
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'83 245 M46, '86 245 auto