I installed my Newport kit right at five years ago into my '51 half-ton, after trying some cheaper alternatives. The unit installed easily and worked with my old original linkage just fine. It worked great until about two years ago when after using the wipers for quite a while, I couldn't get them to shut off! I unplugged the power to the wipers and called Newport the next day to buy a new switch.
Whoever it was that answered my call told me that he would be glad to sell me a new switch ($11), but first, I should try adjusting the "wiper park" screw on the side of the unit.
It worked great and saved me a few bucks.
I just looked up their ad in one of my magazines. Newport Engineering is located in Washington, Missouri.
www.newportwipers.com
