Thanks to everyone for the welcome. I thought I was a pretty sharp guy but this rebuild is a humbling experience. I have both the Chiltons and Haynes books but I have learned not to trust them. I got the wiring diagrams from "Adams Apple" which cured some problems immediately but I still have some questions if anyone can help.

For no 1...the pink wire should be for the 'wash' function for the wipers. there's an additional pink lead for the wash with delay wipers. Look at your fuse panel and see if you have a fuse in the wiper spot or a small circuit board. The circuit board WILL be down there but it's only plugged in if you do have the delay wipers. Kinda Bubba for a factory setup. mkapp78792008-08-31 21:01:30

no circuit board here only a fuse in the wiper slot  but i still have the extra pink wire @ the wiper motor

Many cars install wires that are not used when the option is not there.   It's easier and cheaper than making two different harnesses.

OK, no. 1 again....on my 78SA the wiper motor had a short 6"pigtail with a connector coming out of the plastic cover on the driver side, pink. The pink wire coming out of the conduit connects to that connector. But I have delay wipers.

I cant thank you enough for your help mkapp. Its such a pain (literally) to get a good view under the dash.  I dont have the small circuit board or the pigtail for delay wipers so Im going to assume the extra pink wire at the firewall is not to be used.  I have the same set up as you under the dash for the cruise except I still have an extra connector. I had to replace the vacuum line and repair the cruise wiring  harness going through the fire wall. Maybe when I unwrapped the tape I uncovered the extra connector. here is a link to a good look at the harness http://www.lectriclimited.com/corvette-catalog-pdf/78.pdf you can see that it appears that there are 2 connectors at the end of the single pink wire.  One plugs into the fuse box, the other is exposed in my situation. If you dont see this extra connector, it must be concealed in your harness.

Two connectors at the SAME end? Or opposite ends? You're saying you DO HAVE that pink connector that's plugged into the center of the fuse panel, the ign outlet? The other end would go to the headlight on warning buzzer, which is part of the "convenience group" that I don't believe you have. Delay wipers are part of that option and you don't have that. mkapp78792008-09-01 17:27:30

I have 2 connectors on the same end of the same wire of my cruise control wiring harness. you can see them both in the pic of the harness if you go to the link I sent.  You are right about the "convience group" I dont have the headlight on warning buzzer or delay wipers. I am only talking about the cruise control harness.

Can't open the link. Looking at the skematic in the 78 shop manual, I only see one pink wire(labeled as red). Comes out of the fuse panel(or ignition somewhere?) and goes to the cruise release switch at the brake pedal. Mine under my dash then changes to red and according to the diagram goes to the engagement switch, with the connectors at the steering column. No more red or pink after that. mkapp78792008-09-01 18:35:34

Just another bit of information.

I see the replacement cruise harness in the Lectric Limited catalog you're talking about. mkapp78792008-09-01 22:52:59

[QUOTE=mkapp7879]Two connectors at the SAME end? Or opposite ends? You're saying you DO HAVE that pink connector that's plugged into the center of the fuse panel, the ign outlet? The other end would go to the headlight on warning buzzer, which is part of the "convenience group" that I don't believe you have. Delay wipers are part of that option and you don't have that. [/QUOTE]

Im assuming at this point that its just an extra connector, Im going to wrap it up into the cruise harness.  Thanks again for your help, and by the way I found that I do have the headlight-on buzzer but not delay wipers. Maybe the buzzer was standard.