Here is the thread where I found the repair info and relay part numbers.
http://www.zggtr.org/index.php?topic=4581.msg52790#msg52790 I ended up using the JS1-12V number @$1.55 ea to order, used Jameco because it's in Calif, and I used them for parts when I was in the electronics repair industry. There is a $10.00 minimum so I supplemented the order by getting a few 40A tab relays that are good for accessory items such as lights, or....
As a word of caution, you shouldn't be using a soldering gun on a circuit board, too much watts and heat, you can really do some damage. A soldering iron of no more than 60W was all we ever used.