The links below are all Calorique technical documents:

Basic Wiring:
http://www.calorique.com/Pdf22.html

Parallel Wiring:
http://www.calorique.com/Pdf20.html

Grounded Installation:
http://www.calorique.com/Pdf19.html

Attaching Crimped Connectors:
http://www.calorique.com/Pdf21.html

I use the crimped connectors versus soldering.