Thread: HID option
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Old 02-18-2017, 12:14 AM   #8
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Join Date: Feb 2017
Location: Northern VA
Posts: 22

2007 Outlook XR
Default Re: HID option

Originally Posted by fdryer View Post
I'm not completely familiar with Outlooks and going by info found. Halogen lamps are what I found, including procedures in the link I posted. However, if yours are hid lamps, are they the ones shown? GM hid lamps, at least one type, have the lamp and ballast as a one piece plug n' play unit. The ballast, shown in the previous reply, is the silver metal box behind the long glass lamp. I don't know if GM makes other types of hid's in other configurations. You'll have to examine your lamps and determine if wiring is an issue. As it is, whether halogen or hid lights, they have a finite life and don't last forever. If it's not wiring, the lamps are probably worn out. To be sure it isn't wiring, you'll have to manually turn on headlights, disconnect each light and measure the connections for 12v power; access to wiring diagrams are either provided here from members, (free) or subscribing to alldata or Mitchell for service manuals.

As to searching for replacement parts, GM is not the only source as they're likely to pad a bill as part of "It's nothing personal, it's all business" since every dealer has higher overhead costs compared to shopping online for the same part or equivalent aftermarket replacement. In addition to GM online, rockauto and other auto parts distributors are competitively priced to either match or beat dealer retail prices. Your choice.

Converting from one type of lighting to another may present issues. In general, halogen lighting uses either reflector (you can see the lamps) or projector light housings. You cannot see lamps in projector light housings and light housings are smaller in diameter than reflector light housings due to the intense light output and custom designed optics to throw light farther without blinding opposing traffic. A metal cutoff plate inside low beam projector housings cutoff the upper beam that simply blinds everyone without this cutoff plate - it would simply be a high beam. Other considerations may be with whether or not low beams are used as daytime running lights (DRL's), using a resistor or wired in series for drl use but revert to parallel wiring for night time lighting. GM has several methods and each one is uniquely wired differently. Conversions are either easy or difficult. At the least, hid lights cannot be used in reflector light housings because housings lack the cutoff plate and create a high beam light to blind everyone. Ignorance of these facts resulted in many poorly retrofitted low beam lights blinding opposing traffic. The serious diyer already knows this and buys projector light housings, cracks open the stock housings and custom fits projectors for hid lights. Most, if not all, aftermarket hid lights have a separate ballast box mounted somewhere nearby.

You would be wise to verify which lights are used by accessing your headlights and determine whether or not yours is halogen or hid.

@fdryer, WOW! Thank you for the link to the wiring diagrams. I poked around a bit and I could easily be consumed on that site for DAYS! Love that sort of stuff!

The TSB I found on the lights from your link specifically states the concern is just for the halogen bulbs. So hopes are high I don't have to worry about the wiring harness.

My statement that the lights on my Outlook are HID was info provided to me by our local Chevy dealer. I gave them the VIN and they pulled up the specs of the vehicle, then gave me their pricing. (Even with my parts discount (father is a GM retiree) I'm not fool enough to to get anything from a dealer that isn't mandatory.)

For future reference for anyone else wondering, I THINK the HID lamp includes the silver box shown in your picture. The ballast is more like a silver flat plate/box. (Pics 1 & 2).

The third picture is a screenshot from a YouTube video. (Video is of an Acadia HID replacement - attaching link, important part begins around 4:40.) The ballast placement is circled in red.

After being armed with this info, I feel a bit more confident about ripping into her tomorrow. I'll follow up with what I find. (Fingers crossed for no wiring issues!)
Attached Images
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2007 Outlook XR AWD
Dark Blue, Tan Leather, 2nd row Captains Chairs
Fully Loaded
Engine Replaced by dealer at 100k, Evidence of new(er) transmission
(Purchased in Feb 2017 with 165k miles)


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