| Headlights on with wipers [message #65988] |
Sun, 29 November 2009 18:34  |
Jim Wagner
Messages: 339
Registered: February 2004
Location: Brook Park, Oh
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A new Ohio law states your headlights must be on any time the wipers are on. I don't know if other states have this law.
I added a relay and switch to make this happen. The switch is connected to the on/off arm on the wiper motor. When the wipers are turned on the switch goes to ground bringing in a relay. This puts power to the dimmer switch which puts 12 volts to the headlights. I am using power from a fused ignition circuit that way this will only bring on the headlights when we are driving.
This is set to work with the hyd. wiper motor. If you are lucky enough to have Ken's electric wipers system I am sure this is probably easier to do.
Since our GMC is under cover I haven't tried this out in the real world yet. If anyone can see a problem with this please let me know.
A photo of my switch and a wiring drawing are at:
http://www.gmcmhphotos.com/photos/showgallery.php?cat=5343
Jim Wagner
Brook Park, oh
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