The bypass actually isn't for the rear washer. It allows the hotshot pump to draw fluid directly from the reservoir. If it doesn't have the direct flow, then the pump can't pull the water through because of the "one-pump" setup. If it can't get enough flow, then the auto setting is useless...
In the end...just helps get the unit working properly for the front windshield only...
Just make sure when you/whomever installs it, you need to get the bypass kit for it to operate properly in the H2. Like NJH2 said...you should be able to get it free...otherwise $2.00.
__________________
'03 H2
|