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Do It yourself factory Fogs

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Do It yourself factory Fogs

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Old 01-13-2006, 01:42 PM
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Do It yourself factory Fogs

Well here's a brief step by step on how to install Factory Fogs on an HHR. First off I should point out you will not save any money by doing it yourself. But in my case most of the Black HHRs in my area were in the 22K-24K range. I found one Black HHR that had everthing I wanted except for the Fogs for 19K. This is not the easiest mod you'll make but it can be done by someone with a reasonable amount of auto electrical experiance. I'm assuming that you have some experience working on cars so I'm only highlighting the area that made me think. Also I can only garrentee that the following worked on MY HHR. Yours could be different.

The dealer charged me $90 to reprogram my BCM. Learn from my mistakes and discuss cost before work is done. Not having any info on if or how to enable them put me at a disadvantage. I'm passing the knowledge on to you...use it.

NOTE: Based on feed back from others the LS BCM can not be re-programmed, you will have to get a LT BCM which is exspenssive. 10-13-06


Needed Parts. Deal on the prices. One guy posted he got the fogs for $57
15813308 Lamp (left?) List $78.75
15813307 Lamp (right?) List $78.75
21992589 F-Switch List $29.33
88891787 magnetic oil drain plug. List $3.51 (optional)
10121502 plastic retainer List $.38
Two male bulb connector, Local junk yard or Walmart

There are two keyed types of connectors for this style bulb (9104) has 2 keyed tab. Bring your bulb with when looking for the connectors. The 9104 bulb is 37 watts. Looks like if you drilled out the center hole in the Fogs to 7/8" you could use a 55watt 9006 bulb.

You literaly snap the lamp assemblies into the Front Bumper cover. Simply remove the retainers on the inner wheel well cover to access the fog lamp area behind the bumper. Unsnap the plugs and snap in the lamps. I don't have an after photo, but frame ground one wire and hook the other to the wire from the relay out found later in this post. Use heatshrink and solder connection, moisture could be a problem in this area...no short cuts.



Disconnect Battery !!!!!
Also disconnect main 12 volt leads from Battary and to Starter next to fuse box under red Plastic cap.
Remove top of Fuse box from mount by releaseing 6 snap tabs like the one circled below.




Loosen 4 bolts like the two circled in blue to release the 4 connector that plug into the bottom of the fuse box. FYI on the relay socket pin out
Green: Ground for Relay Coil and Fog out (optional can frame ground at light assembly)
Purple: Fused 12 v from fuse just above it, (No connection made)
Red: +12v Output from relay to fogs (this is the one you need to remember)
White: 12v to relay coil from BCM (no connection made)




Fuse box flipped over and connector exposed




You should have zero ohms between the pins circled and there corrosponding pins on the relay socket. I didn't have the correct connector pin, but as you an see I did have a small male spade connector that worked perfect. (picture was taken while testing. I did not use the ground and 12v output is not connected until after the connector has been reinstalled).





I inserted the wire from the previous picture into the position identified by the red arrow. Forgot to take a picture though. Double check end of wire with Ohm meter to Relay socket pin for final check. It should read Zero Ohms.






Pop open the Radio panel from the TOP and you'll find the wiring harness for the switch. Just snap in and plug it in.



Re assemble everything and take it to your dealer to get the BCM programmed for fog lights

Good Luck

Last edited by ChevyMgr; 04-08-2009 at 10:32 PM. Reason: reposted pictures
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Old 01-13-2006, 05:35 PM
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Mine's an LT1. It had the wiring from the switch to the BCM. But no wirinig from the fuse box to the fogs. I had to run a wire form the relay pin to the fogs. If you have the relay/fuse you could use the fog lamp circuit to run non factory fogs or other lights like running board light ect. The circuit is disable when using Hi beams.

After programming the BCM the green Fog indicator under the Speedo works just like the factory HHR with fogs.

The manual only shows one type of Fuse box under the hood so I would guess you have the Relay and Fuse already installed.
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Old 01-13-2006, 08:43 PM
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Wow. If you had the dealer install it? How much would of it been? I'm glad my 2LT came with fog's after seeing those pictures
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Old 01-14-2006, 06:06 AM
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It's really not that hard to do. It took me about 2 hours. Figure I could cut that time in half now that I have the needed info on the factory wiring. It's a lot easier than some of the stereos I've done in the past. Still looking at about $90/hr? at the dealer.

Bottom line I don't like the looks of the dummy plugs at all, and I couldn't see paying and extra 3-4k for stuff I didn't want just to get fogs to fill in the holes.
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Old 01-14-2006, 12:14 PM
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So what's going to be your next project for the car?
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Old 01-15-2006, 01:25 PM
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Lowered, Rims and Tires once the snow melts and an Amp for the rear door speakers. Since its my daily driver that will be about it for 4-5 years

After that it will be Converted to V8 RWD, Tubbed, Tube Frame, Roll Cage everything need to run S/P, S/G. I've built two other race cars from the ground up. I had a 94 Grand Am GT (the first new car I ever bought) that I was just getting ready to convert when it got totaled on my way home form work (I was really bummed). I built a BBC Vega instead. It makes sense from a racing stand point (676hp on a 2600lb car). But its not the same, I've always wanted a racecar that I bought new. Nothing GM put out real cuaght my eye until the HHR came out and I knew I had to have one for future use. I can't afford to cut up a 19K car so the Vega is going to have to put in some OT. This would give you some insight as to why I did't buy a fully load HHR.

Before you roast me on the body work both of these cars came from the junk yard and we built for racing not show. I expect the HHR will have a near mint body once I break out the welder.

The Vega. Picture it black with more of a rounded front end and boxer back end and two more doors....you get the picture.


The first Race car I built. It not preatty but it did kick ass (1/8 mile time)
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Old 01-15-2006, 07:28 PM
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Like I said CJ......you & me, - we gotta hook up!
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Old 01-15-2006, 10:47 PM
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Damn that bad boy looks mean with power
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Old 10-13-2006, 10:59 AM
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Got several E-mails on this so I made a few updates. Most noticeable is that it appears from feedback that the LS BCM can not be reprogrammed so LS owner will need to purchase a LT BCM or wire fogs direct.
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Old 10-13-2006, 11:28 AM
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Any chance that you can fix the pics?
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