HID relay question
Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=64327
Printed Date: May 10, 2025 at 12:03 PM
Topic: HID relay question
Posted By: aaydemi
Subject: HID relay question
Date Posted: October 13, 2005 at 8:12 PM
I'm trying to install a set of H4 HIDs, but can't get them to turn on. I did some probing with a multimeter at the 4 prong relay and got the following values:
85 - 12V
86 - 12V
87 - 12V
30 - 0V
85 and 86 are coming from my OEM headlight harness, 87 is 12V from the battery, and the 30 pin is going out to the ballast. I'm assuming the lights aren't working because no power is getting to the ballast. However, I can't figure out why the relay isn't sending out 12V to pin 30. I have a ground wire from the ballast to the negative terminal on my battery, so I assume my ground is sufficient. Any help?
Replies:
Posted By: Velocity Motors
Date Posted: October 13, 2005 at 10:26 PM
85 & 86 can not be the same polarity. One has to be a (-) trigger.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
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