I ended up removing those "Butt-connectors" as I had heard that they are not very reliable over a long period of time. So now I have soldered the wires together and put Heat-shrink tubing over the connections. That job took a while, most likely because it was still a little cool out in the garage, only a little above 10 degrees Celsius.
Still waiting on some dash electronics and small stuff like connectors but we are getting close to having the dash installed. Sometime soon I should do a test fit of the dash and see where we are sitting with how it will fit and look. ;)