I am the original owner of a 1992 Mustang GT convertible, and I want to rewire the fog lights for independent function while preventing any overheating problems. The procedure written by Christopher Ihara calls for a Radio Shack 30 Amp Auto Relay (p/n 275-226). With the demise of Radio Shack, this part is not readily available. Is there another relay that can be used to replace the 275-226 relay? Thanks for any assistance offered.