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#103080 - 08/01/01 09:20 AM
Daytime Running Lights
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Member
Registered: 07/22/01
Posts: 1029
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On my '90 Roadster, as part of the Canadian equipment package, the car has automatic daytime running lights. It senses ambient light and automatically turns all the lights on. This is really annoying unless it is 100% sunlight. A cloudy period and the headlights keep flipping on and off. Does anyone know how to defeat this feature? I am sure it has something to do with the sensor mounted on top of the dash. Barbie  [ 08-01-2001: Message edited by: Barbie ]
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#103082 - 08/01/01 11:28 AM
Re: Daytime Running Lights
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Member
Registered: 07/22/01
Posts: 1029
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Hey Buzzer, what's a hat car? After researching this is a good idea, it just doesn't work. The lights keep flicking on and off. People must think I am very confused.  Surely others must have had this same problem and found a solution. Barbie P.S. I guess C4C5specialist's sig would look pretty funny with him waving a screwdriver around, wouldn't it? 
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#103083 - 08/01/01 11:46 AM
Re: Daytime Running Lights
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C5Forum Fanatic
Registered: 12/05/00
Posts: 2194
Loc: Virginia
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OK I told you I type with 10 thumbs now you know for sure I wasn't fibbing. The wire around also needs to take into consideration the relay that controls the light circuit. Find the relay, wire appropriatly and your lights will stay on or off at your request.
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#103084 - 08/01/01 11:53 AM
Re: Daytime Running Lights
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Full Throttle Member
Registered: 11/29/00
Posts: 959
Loc: Silver Spring, MD
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You guys are way too funny. hahha. Barbie... if I recall.. some of the F-body guys took the top part of their dash off... then wired in a resistor in series with the sensor.. this fooled it into thinking it was always daytime... 
_________________________
Eric Wong 01 Magnetic Red Coupe 12.4@116MPH 2002 DC Region SCCA/MWCSCC Solo2 SM2 Series CHAMPION! Our Autocross Team
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#103085 - 08/01/01 01:48 PM
Re: Daytime Running Lights
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C5Forum Fanatic
Registered: 12/05/00
Posts: 2194
Loc: Virginia
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Originally posted by magnetic1: You guys are way too funny. hahha.
Barbie... if I recall.. some of the F-body guys took the top part of their dash off... then wired in a resistor in series with the sensor.. this fooled it into thinking it was always daytime...
There you go. A work around. Now all you need to do is determine the resistance factor. Measure the sensor and you should be OK.
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#103086 - 08/01/01 05:57 PM
Re: Daytime Running Lights
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Member
Registered: 07/22/01
Posts: 1029
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Ummmmmmmm....thanks. Perhaps you could make it just a little more technical for me. IE take screw driver and .... Barbie 
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#103087 - 08/01/01 07:29 PM
Re: Daytime Running Lights
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Member
Registered: 07/10/01
Posts: 1612
Loc: conn
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Hey Barbie, NOW< What do you need about a DRL disable??????? Now, where did I put my hammer????????? Anyway, if you have a Radio Shack near you, you can obtain a resistor to fool the light sensor, into thinking that there is correct ambient light. All you have to do is to remove the defroster grille, and unscrew the sensor, NOT with a screwdriver, just your finger, and remove the sensor. ONce the correct resistance is found, simply plug it in, and tape it into the harness, and reinstall the grille. I will repost with the resistance value. NOW WHERE IS MY DAMN HAMMER?????? 
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c4c5 Chevrolet dealership mechanic, ASE Master Technician w/L1. COFFEE ADDICT. A persons judgement is only as good as the information they have, which should be FACT, not fiction.
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#103088 - 08/01/01 09:07 PM
Re: Daytime Running Lights
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Member
Registered: 07/22/01
Posts: 1029
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Thanks! You guys are great. Now this is something I can do. All the knowledge and help is always appreciated from this Forum, and we are very fortunate to have our very own Paul. AKA c4c5specialist Barbie
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#103089 - 08/02/01 10:35 PM
Re: Daytime Running Lights
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Member
Registered: 07/10/01
Posts: 1612
Loc: conn
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Hi Barbie, After further review, it works on of 2 ways, depending on the date of manufacture. I would need to confirm, via your VIN number to make sure, but it will work one of 2 ways. If you remove the sensor, and measure the resistance, you can see what it is, in OHMS. Now, I do not have a spec per GM, all they say is that depending on the design, it will either be low resistance with sunlight, such as 150 ohms. Or, it would be the opposite, high resistance at 10000 ohms. I will do more research, depending on your VIN, so I will repost tomorrow, if you dont have an answer. Best to you, c4c5 :rolleyes: oncethisisfixediwantmyhammer 
_________________________
c4c5 Chevrolet dealership mechanic, ASE Master Technician w/L1. COFFEE ADDICT. A persons judgement is only as good as the information they have, which should be FACT, not fiction.
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#103090 - 08/03/01 07:42 AM
Re: Daytime Running Lights
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Member
Registered: 07/22/01
Posts: 1029
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OK, you have mail. Barbie
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#103092 - 08/05/01 08:45 AM
Re: Daytime Running Lights
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Member
Registered: 07/10/01
Posts: 1612
Loc: conn
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Hi there, Well, Barbie, I am going to have to guess on this, as no other information is available. I have found a friend with a Canadian model, so I am going to do my diagnostics on this car, and I will repost. Sorry for the delay, but this is one of those cases where published diagnostics is just not working. Best, c4c5hammeronamission 
_________________________
c4c5 Chevrolet dealership mechanic, ASE Master Technician w/L1. COFFEE ADDICT. A persons judgement is only as good as the information they have, which should be FACT, not fiction.
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#103093 - 08/06/01 07:56 PM
Re: Daytime Running Lights
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Member
Registered: 07/10/01
Posts: 1612
Loc: conn
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Hi there, Hey Barbie, the resistor that you want is a 15k ohms resistor. Or 15,000 ohms, and this should tell your DRL module that you are in bright sunshine all the time. You will simply insert one end into each of the pins, and you tape it closed. Let us know how you make out, and thanks for opportunity to help you out, c4c5  nowheresmyhammer
_________________________
c4c5 Chevrolet dealership mechanic, ASE Master Technician w/L1. COFFEE ADDICT. A persons judgement is only as good as the information they have, which should be FACT, not fiction.
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#103094 - 08/06/01 09:13 PM
Re: Daytime Running Lights
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Member
Registered: 07/22/01
Posts: 1029
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Thanks Paul, I will run out to the Radio Shack and try it tomorrow, and keep you posted. Barbie  IfIgiveyouthehammerwhatwillIuse
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