10-23-2009, 05:00 PM
Join Date: Jul 2007
Location: Milpitas, CA
Total Cats: 1
Originally Posted by Ben
No. No. No. You want to use a SPDT relay, but you drew a SPST relay. You do not want to use a diode. (though you may need to use a diode across the relay if you see a voltage spike when you shut the high beams off)
As I recall, the headlight system was 3 wire, common ground, +12V switched. Get a SPDT relay.
30 to HID +
87a to Low Beam +
87 to +12V
85 to High Beam +
86 to ground
This will pass through low beam +V straight to the HID module. When you hit the high beams, your +12V source will power the low beams. You may also find that you need a capacitor between the HID+ and ground if you have any flash or flicker when you switch from low to high.
Thanks ben. Figured I was doing something wrong. Ill redraw it again and get working on this damn thing. sucks not having high beams.
Is there a specific capacitor size you recommend?
One more thing ben,
If I wanted to use a 12V line directly to power the HID's how would I go about doing that? I've tried to use the low beam power, but apparently the HID ballasts draw too much current and the ballast never come on. In other words, my HID's are being powered by the high beam line right now. THe low beam power isnt connected to anything.