I just removed my loose alternator in order to tighten up the mounts and inspect the connections.

Unfortunately, I accidentally removed the 3 wires attached with bullet connectors before I took a photo.

I've got the alternator reinstalled but now I'm stuck.

Does anyone happen to know which wires go where?

The wire colors are:
- Red with blue stripe
- Orange
- Black

The alternator terminals are labeled:
- D+
- D-
- DF

Noah-
Hopefully someone can answer right now, but if not, I will check tonight. My hunch is DF is black, D- is orange (brown, I think), and D+ is red/blue.

Do this google image search and you will see some examples:
wire color D+ DF D- alternator

But like I said, I will check for sure later if nobody else can confirm one way or another.

__________________
1968 220D, w115, /8, OM615, Automatic transmission.
My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).

looks like haynes says D+ red/blue, D- brown, DF black
edit to add: thats for a 76 220D, as far back as my manual goes

__________________
1981 NA 300D 310k miles

Thanks for your help guys. You were both correct.

If I would have thought it through a bit before I posted I would have realized it's marked on the plug going to the voltage regulator.