Glow harness lights--Glows, Water in Fuel, and Low Coolant

[Wrench]

The inside wiring harness for the glow plugs on my '82 is a stand alone harness with three lights on it. One is the glow light, one is the water in fuel,and I can't figure out what the third one is. I know I shoulda marked it when I took everything apart . . .

Any ideas? It has a pink and a gray wire going to it. Thanks!!

 

[Wrench]

Ok, so I'll figure it out on my own . . .

Low coolant warning light, don't know why it's part of the glow plug harness or why the gassers wouldn't have one, but it goes in place of the choke light on a gasser dash. I'm using a 6.5 rad, which doesn't have the little bung in the rad end cap for the sensor. I swapped my instrument panel for a different (non-diesel) one because the speedo was in mph being from the States, and I couldn't just swap the speedo over because the mount was a little different. Didn't think to check the little light thingys down below to see if they were different, figured the glow and water in fuel lights were the only difference.

Hope this helps someone else down the road . . . .