Phil,
Sorry late on this thread. Here's a little history of the "Click of Doom."
If you want to go to the solution directly, go here:
Adding a Remote Starter Solenoid to your Chevy, My Way
If you're up for some history, start here, noting the different Ford solenoids and their reliability:
First Coast Cobra Club • View topic - Tom's starter CLICK of doom. Solved?
and then make your way to the last message here:
First Coast Cobra Club • View topic - Zephyr update June 2011
The final solution, dual solenoids, has worked on the Cobra and the Zephyr for nearly three years and many thousands of miles for each car.
Hope this is of some help,
Tom