Not sure how your connectors are made, but a general rule of thumb is that the thicker the stock (metal), the less skill it takes to weld it. For example, laying a butt joint on 1/4 stock is a snap. Try it with 20 ga. sheet steel and its a different story.
If the connectors are heat treated, the heat from welding will reduce the temper (strength) in the area you're welding.