I have to jump in here and agree with James. My clock worked well for about a year after I bought the car. Then the clock stopped. I took it apart and found the fuse blown... I then used plain solder per the instructions, and it then worked great! Of course, it doesnt keep accurate time... off by a few minutes each week. But no problem! Just adjust as I get into the car. I read that even if you remove the clock and adjust on the "bench", depending on temp, climate, etc... the clock will never be 100%. I like the "click" sound of the original clocks...
Bob