2006-2011 Yaris Liftback Intermittent Rear Wipe Module

[CTScott]

Quite some time ago I put together a DIY for installing a Prius, etc. wiper stalk to gain adjustable intermittent front windshield wipers (www.yarisworld.com/forums/showthread.php?t=15512).

After installing it I found that the stalk had an unused position for a second mode of operation of the rear wiper, which required additional wiring and parts to work on the Prius. This unused mode on the stalk is a bit annoying, as you click from off, to it, to on when using the rear wipers.

I created a circuit to take advantage of the unused position and provide an adjustable intermittent mode for the rear wiper. This comes in very handy, as the rear doesn't need to be run as often as the front, and it is nice to not have to worry about occasionally manually clearing it. I made the time delay between swipes adjustable from 4 seconds to 2 minutes. This is obviously a much longer delay potential than front intermittents have, but when driving in drizzle or a light snow, 2 minutes is perfect for keeping the rear window clean without thinking about it.

Intermittent Rear Wiper Module.jpg

Upgraded_Yaris contacted me recently to see if I would make him one of the modules, as he had just installed a Prius stalk on his liftback. After building one up for him and documenting the installation process, I thought I would make them available to others who might be interested. This can also be used with the stock wiper stalk. The price is $40 shipped (to the US or Canada).

If it is used with the Prius wiper stalk, then the unused “low” rear wiper mode will become the intermittent rear mode. If it is installed with a standard Yaris stalk, then the intermittent mode will replace the constant rear wiper mode.

Here's a video of it in action:
http://www.youtube.com/watch?v=cKo72VvCtTQ

Here is the installation guide for those wondering what's involved in doing so:
Intermittent Rear Wiper Module Installation.pdf