HOW TO: Override DRLs on a GA

[SSRacer]

Hmmm...I just tried this method on my 2002

**Apparently this method works as well**
Ground the dark blue wire(b4) and run a jumper wire from the brown wire (pin 8 on the bottom) to the sunroof fuse on the Passenger side fuse panel.

It got rid of the DRLs, but replaced them with the parking lights. I can no longer turn my parking lights off. Guess I'll have to pick up a relay and try the other method.

The only thing is that I spliced into the brown wire instead of cutting it in two as there was some confusion about this. Should I cut it?

[SSRacer]

OK, after a brief scare I got this working. You do have to completely cut the brown wire, for any of those looking to do this.

Total cost for me: $0.00 (I had spare wire and connectors).
Total time, minus my mistakes: about 20 min.
Tools: couple sockets for removing panels, wire cutters, crimpers, wire and a few connectors.

My scare:
After disconnecting the battery again and replacing my splice connecter with a butt connector I reconnected the battery and turned the key to the "ON" positions and put the car in drive. The headlights came on. I thought "great, I went from parking lights to full headlights, I effed something up." So I decide to start the car to see if that made any difference. It wouldn't start.

It just cranked and cranked. I thought "oh boy, I fried my BCM or something."

So I start disconnecting the battery again to put all the connections back to stock when it hits me...I forgot to plug the connector back into the BCM...DOH!

I disconnected the battery, plugged the connector back in and reconnected the battery. Presto! Everything worked like it's supposed to! No more DRL for me, and no SVS!

Thanks for this thread guys.

Are you ever going to put this into it's own sticky so people like me who are just now trying to do this don't have to read through 800 pages of back and forth?

Thanks again!

[HeyMelo27]

Originally Posted by daxx

Add me to the list of those who've followed these steps sucessfully. My '00 can now run "lights out" when needed.*

My execution of these mods allowed for an easy reversal. For the ALC mod I didn't cut wires, but used two scotch-loc type connectors to put a jumper across the two pins, with a quick disconnect pair between them. Not only can I re-enable ALC quickly, I can also put a switch in the circuit to enable/disable this at will. Similarly, for the DRL bypass I used quick-disconnects between the wires for easy reversal or the addition of a switch.

* I may tell of my no-brake-lights mod some day... but that may be considered encouraging law breaking.

just put in hid's in yesterday knowing i would have to do this. only probem is its my moms car and she doesnt like change. so i need to use a method like yours...a switch or quick disconnet. are these connectors just a crimp on style? for the DRL bypass i would get a wire to ground with a quick disconnect to the BCM wire with a quickdisconnect? how does this jumper work? stupid questions im sure but i wanna do it right the 1st time...never having done it b4. thanks


mike

[SSRacer]

Your mom doesn't like change...so you installed an HID kit on her car?

Chances are she would notice less of a change that the DRLs are gone than the HID she now has.

[HeyMelo27]

Originally Posted by SSRacer

Your mom doesn't like change...so you installed an HID kit on her car?

Chances are she would notice less of a change that the DRLs are gone than the HID she now has.

eh its not so much the drls. i would just like to have that option but the alc for sure...id like to make a switch for that. as for the hid's....well i never heard anyone say they were worse than regular bulbs. my mom loves them cuz she can see much better...shes 57 so you know how that goes. anyway just trying to get a better idea of how to install a switch for a 00 GA ALC.

thanks

[HeyMelo27]

[HeyMelo27]

ok so im ready to set up a switch for the drl and another for the alc. i got the concept down for the drl switch setup. but how would i setup the alc on a switch

"ALC bypass
at connector C2 find A3 the yellow/black wire, and B2 light green/black wire.. be careful because there are two light green/black wires on that connector.. the one you want is closest to the yellow/black wire.

cut these wires again leaving as much wire as possible attached to the BCM.. simply tie the two wires together and tape them up real good. (this is the same thing as removing ambient light sensor and adding a jumper wire)"

id like to make it so i can flip on/off the alc with a switch but am not sure how to do it with this "jumper setup" any help would be cool. also....where would a good spot for the switches be? kick panel?

[1stGAGT]

I have a 05 GAGT. Has this been done on my particular year model? Thanks James

[armith]

Originally Posted by 1stGAGT

I have a 05 GAGT. Has this been done on my particular year model? Thanks James

I believe the 04-05 models were as simple as pulling the DRL relay, and a resistor in place of the ambient light sensor for the ALCs. Sound about right???

[zacktheman]

k so this is what i did on my 2001 grand am
for the DRL: dark blue wire (b4) Cut this wire, attached this wire to a good ground
For the ALC: A3 the yellow/black wire, and B2 light green/black wire, cut these wires, tied the two wires together and tape them up real good

everything works like it should, only thing is, the SVS light is on. So my question is, do i need to cut the brown wire and put it in the sunroof fuse or whatever that process is? Or do i need to install a resistor between A3 and B2 wires?

[zacktheman]

well i think everything works now, i put in a resistor between the A3 and B2 wires

[traingeek087]

Originally Posted by armith

Ok. This I know for sure works on 99-00 model GAs. This makes for an alternative for the DRL kits that are no longer in production. There is hint that a fully Plug and Play version is underway which I would recommend if you want to return to stock easily. If you are brave enough to mess with the BCM wiring there here you go.

First do not remove any relays or fuses; however, I highly recommend that you unplug your negative battery terminal.. Don't want to risk popping fuses or pooching the Body Control Module (BCM).

The BCM is located on the passenger side under the dash. There isn't much space to work with so to get the most space I would recommend that you remove your glovebox as well as the under dash panels. The BCM looks like a black box about the size of a CD jewel case. It will have 3 connectors.. 1 pink and two gray.

no drl
at the BCM, locate Connector C2 (center)

On the "B" side row of pins, locate the dark blue wire (b4)

Cut this wire, leaving as much as possible still attached to the BCM.

Now simply add on a piece of wire to the side that is still connected to the body control module. attach this wire to a good ground, like a screw in the metal part of the dashbehind the glove box or I used the interior light mounting bracket screw right there next to the BCM.

The BCM now see's this to mean that the regular headlights are on, and so it energizes the relay that turns off the DRL's.

ALC bypass
at connector C2 find A3 the yellow/black wire, and B2 light green/black wire.. be careful because there are two light green/black wires on that connector.. the one you want is closest to the yellow/black wire.

cut these wires again leaving as much wire as possible attached to the BCM.. simply tie the two wires together and tape them up real good. (this is the same thing as removing ambient light sensor and adding a jumper wire)

The BCM will now think that it is daylight all the time and it will not energize the relay to turn on the headlights.

independant fogs instructions are available just PM me. Most people have been concerned about DRL and ALC bypasses..

Thanks to Monello and Iceman for helping me the instructions and correct pinouts.

It states for the Ambient light sensor or ACL that they are a yellow/black wire and a light green/black wire....I have a wiring diagram off of alldata.com and it says the green is suppose to be light grey/black....is one of these a typo? what one is correct?

[kipper1012]

wow there are allot of posts. let me get this straight on an 03 you just pull relay #22? thats what I did and it worked great but now i have a SVV light.

[mekanikman_402]

Is the DRL and ALC delete the same for a '97 GT?

[mekanikman_402]

Anyone?......I removed the pass side panel and looked up under it and i didnt see a black box.....i saw a large silver box...is that the ECU?...I want to get rid of the DRL and ALC without cutting wires for my comp...Did they even come with a BCM in 97?...Please help!...I would appreciate it tons!!!!

[Kullski]

Ok so i have a 2002 Grand am GT1 and i saw that this is how you disable DRL

01-02 model Grand Am

No drl
1.) I should not have to say this but first disconnect the negative terminal of the battery. (cheap insurance).

2.) Remove the middle connector as stated before in the previous posts. Now locate the brown wire (pin 8 on the bottom). This is the pin that tells the BCM that the lights switch in not in the auto setting. Cut this wire, leaving enough room to extend it to the relay.

3.)The relay: Get a standard 4 or 5 pin 12V relay. Here is how the pins need to be wired. Pin 30-->go to the brown wire that you cut (on the BCM side), Pin 87-->12V (constant), Pin 86--> ground, Pin 85-->12V (switched when key is on), Pin 87a-->no connect.
NOTE: the 12V constant to Pin 87 could also be switched I do not think that it matters.

4.)Once the relay is connected I used some double sided tape and stuck it next to the fuse box out of the way. Now you need to cut the dark blue wire and ground it just like the 99-00.

5.)reconnect your BCM and your battery and test the system. Every thing worked fine for me no SVS and no DRLs.

Can someone tell me exactly what gets connected to Pin 87 and Pin 85

[SSRacer]

I think s mod needs to put together a final list of instructions, make it a sticky, then lock it.

[SSRacer]

OK. Someone asked me if I had any pictures since I did this on my 02. I didn't, but out of the kindness of my heart, I sweated my butt off in the garage for a bit to take some pics, so here you go.

This is only for the DRL disable on a 2002 (and whatever other years are the same...2001 I think).

This is the BCM still under the dash:


This is the BCM after I slid it out of it's holder, the middle connector is obviously the one we are interested in:


Here you can see the two wires. The brown (spliced to white) goes to power, the blue (spliced to black) goes to a ground (the other side of the cuts are just taped off):


There is not much wire to work with, so it's a bit of a pain.

Another pic from the back to show the wire locations (ignore the speaker wire):


The white wire that I attached to the brown goes to the sunroof fuse:


Hope these help some of you out.

[grims01gt]

So it shouldn't bother even if you have a sunroof it will work without throwing the fuse out? Thanks a ton for the pics. I appriciate it to the fullest extent.

[SSRacer]

You can run it to anything that has power when the car is turned on. Sunroof is just easy.