Hid resistors HELP
Thread Starter
Intermediate
Joined: Apr 2006
Posts: 45
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From: CHICAGO ILLINOIS
Hid resistors HELP
Dose anybody know what ohm resistors to use ? how they are installed?
I would think piggyback on the positive side to get some resistance.
I put the HIDS in but can not use the twilight feature any more they
wont open.
Also have to keep them on for a while to get to close.
Call me cheap but to buy 2 resistors for $20 is to much...
There must be some technical person that can help?
I would think piggyback on the positive side to get some resistance.
I put the HIDS in but can not use the twilight feature any more they
wont open.
Also have to keep them on for a while to get to close.
Call me cheap but to buy 2 resistors for $20 is to much...
There must be some technical person that can help?
Le Mans Master
Joined: Jan 2001
Posts: 5,008
Likes: 508
From: Hilton NY
I added a 150 ohm 25 watt resistor between the low beam feed and ground. Without this resistor the headlights wouldn't go down in the low beam mode, high beam had to be selected. I installed some bi-xenon projectors and used the low/high beam feeds to drive control circuits, there wasn't enough load for proper motor operation so the resistor was added. I don't know if all C5 systems with HIDS will respond the same way with this resistor as I only tried it on mine. One resistor on both the low and high feeds might be needed on other C5 systems. The 25 watt rating could also be reduced, I used what I had which was #TBH25P150RJE-ND. Digikey has a good selection of resistors. http://www.digikey.com/product-searc...esistors/66696
Last edited by Fast one; May 28, 2012 at 06:25 PM.
Thread Starter
Intermediate
Joined: Apr 2006
Posts: 45
Likes: 0
From: CHICAGO ILLINOIS
THANKS FOR RESPONDING!
So i will need to put a 150 ohm 25 watt resistor on the 12 volt side?
I was thinking just piggy back on positive side because dont want to lower voltage to HID capacitor. i WOULD THINK?
So i will need to put a 150 ohm 25 watt resistor on the 12 volt side?
I was thinking just piggy back on positive side because dont want to lower voltage to HID capacitor. i WOULD THINK?
Le Mans Master
Joined: May 2006
Posts: 5,747
Likes: 224
From: Hillsboro Oregon
Or use a proper battery based, relay wiring harness for your HIDs
http://www.ebay.com/itm/NEW-HID-Xeno...#ht_1039wt_989
http://www.ebay.com/itm/NEW-HID-Xeno...#ht_1039wt_989
Last edited by jrprich; May 28, 2012 at 07:41 PM.
Thread Starter
Intermediate
Joined: Apr 2006
Posts: 45
Likes: 0
From: CHICAGO ILLINOIS
Thanks put in resistor on one side it fixed the problem. I still can not use the twilight feature. They come on when its dark but do not open. Do you think if I put another resistor on other side it might fix twilight?
Thread Starter
Intermediate
Joined: Apr 2006
Posts: 45
Likes: 0
From: CHICAGO ILLINOIS
Thanks for responding,
I will have to check but twiligt worked fine until HID's were installed
Well checked the twilight with high beam and it works so maybe I will try installing another resistor on the other Hid.
I will have to check but twiligt worked fine until HID's were installed
Well checked the twilight with high beam and it works so maybe I will try installing another resistor on the other Hid.
Last edited by mrfixer; Jun 14, 2012 at 08:21 PM.
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I've only read about the resistors helping to close the headlights, not open them. I suspect you have another issue.
FYI for future use. 100 ohm, 5W resistors would work fine. 150ohms, 5W is good too. The 25W resistor is overkill. 100 ohms or higher would keep the power below 2W. A good rule of thumb is to use a resistor at 1/2 rated power or less.
FYI for future use. 100 ohm, 5W resistors would work fine. 150ohms, 5W is good too. The 25W resistor is overkill. 100 ohms or higher would keep the power below 2W. A good rule of thumb is to use a resistor at 1/2 rated power or less.