HID - Would a Delay Circuit Extend Life? - BMW Luxury Touring Community
 
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post #1 of 2 Old Mar 25th, 2006, 8:21 am Thread Starter
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Question HID - Would a Time Delay Relay Extend Life?

Still snowing here and I can't ride, so I'm getting all geared up to install my new HID low beam kit (from CQ)....and I got to thinking. I've been reading here, and in the HID kit instructions, that cycling the light on and off can reduce it's life. Now obviously when you start the bike, the headlight cycles on(when key is switched on), then off(while cranking), then back on (after bike starts).

I know some folks have installed an Autoswitch,to allow them to turn their headlight on manually, but knwoing me...I'd forget to turn it on, then I'd end up with a "ticket to the dance" for my forgetfulness.

So, I was wondering, has anybody ever toyed with the notion of installing a time delay realy for their headlight? Some like this. I'm thinking of wiring this up to a relay for the headlight..and setting to to something like 15 seconds. Then, when turn my key on, I can wait for the ABS self-test, startup diagnostics to finish, hit the start button....and my headlight would switch on a short time after that. Best thing is...the headlight would only switch on once per start-up....versus twice...and no worry about ever forgetting to turn it on.

Whaddya think gang? Anybody ever hear of something like this...or better yet..has anybody done it? Would a device like this trigger any fault codes/lights?... if the system can't detect an immediate current draw at the headlight?

Thanks,
Toolman

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Last edited by Toolman; Mar 25th, 2006 at 9:10 am.
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post #2 of 2 Old Mar 25th, 2006, 1:19 pm
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Location: West Linn, OR
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My HID has been on two LTs, for about 5 years and almost 100K miles. It still works just fine. I did have to replace the relay once, when I switched it between bikes. All other parts are original, including the bulb.

While I don't think what you're proposing would hurt anything, I just don't think it's necessary. Now I wouldn't try and manually flash a high beam HID over and over, but for normal use I don't think there is a problem, especially on the low beam.

Ken
Pacific NorthWet
'13 Dark Graphite Metallic K16GTLD, 24K miles
'09 Magnesium Beige Metallic K13GT, 63K miles
'03 Anthracite Metallic K12LTC, 66K miles
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#143, IBA# 366, MOA# 111996, SCMA# 24032


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