*Update*
I removed an S+ door emitter and read the voltage coming out of the 2-pin Molex with a simple hand held multi-meter.
With the door open, I got a reading of right around 5 volts coming out of the plug - give or take a quarter volt because of the pulsating effect.
I also measured the amperage the emitter Molex plug was pushing
and I couldn't get my multi-meter to read any higher than 50-52mA.
This is well within the range of the SE5455-2 emitter diode because yours can handle upwards of 100mA.
Because human eyes do not fall in the same spectral wavelength of these LED's, I grabbed a cellphone
and viewed the emitter quickly pulsating a blueish light through the viewer lens while in video mode.
I saw it light up a fairly weak, not overly bright blue light.. more like about a 3 watt bulb in strength.
Sort of like a little bit dimmer than a blue Xmas tree bulb but in a quick, flashing mode...I hope that describes it without me owning a light meter? Haha
Going by the Jameco specification sheet, I'd say your pictured SE5455-2 emitter would work fine anywhere needed on an S+.
Finally, I noticed that the black ground wire (-) of the door emitter connects or is soldered to the middle pin of the TO-46 can.
The outside pin should be soldered to a red powered wire.
I'm surprised that it wasn't clearly shown on the Jameco specs sheet.
I hope that helps ya.
I'm going put my machine back together...haha!