Z-links are an easy way to connect pushrods to control horns. Simply use a small amount of glue and heat shrink to secure the joint. The Z-links come in a pack of 20.
Example Feed the heat shrink onto the pushrod or Z-link and then add a very small amount tacky glue to hold the Z-link and pushrod together. Slide the heat shrink over the joint and apply heat to shrink the heat shrink.