I disconnected the DRL resistor under the hood but this does not
disable the DRL's as expected from this link:
It looks like the headlights are now full brightness but the
headlights are still on (I want them to be off and operated only by
the light switch).
What is the next step - jumper the DRL relay ?
Anyone have any suggestions?
If you still need this info ..
I have a 2000 Grand Prix GTP, and the way to disable it that works, is to
unplug the voltage reducing diode, which is a large finned object located on
outer wall of drivrs side of dash. Can be seen through an access pnel when
door is open.
If you unplug the diode, running lights will not work, but everything else
works as normal.
I would imagine a 99 Bonneville would be close to this.
I completely removed the DRL resistor like it says on the website
below, but no joy. I pulled the ambient light sensor, still no joy. I
can't find the relay box to look for the DRL relay so that I can
hotwire it. My last option is to find the Park/Neutral Position Switch
so that I can trick the Light Control Module into seeing the
transmission in park which will allow me to turn off the headlights
using the headlight switch at will.
The Pontiac unlike other cars does not have a separate DRL module.
Instead everything is contaolled by the (master) Light Contol Module
which means that you need to manipulate the inputs to the module to
control the DRL. When the Light Control Module gets a "Park" input
telling it that the transmission is in park, the DRL's go off. My goal
is to trick the Module into thinking that the car is in park all the
time. I'm doing all this because I installed HID headlights and they
are flaky when the DRL is active. It's turning into a real pain in the
On Wed, 01 Feb 2012 22:28:46 -0600, Paul in Houston TX
Yep that's the ticket - the solution for the 1999 Buick LeSabre. On my
car the A7 input to the Lamp Control Module is light green and there's
no A8 input shown in the 1999 Factory Service Manual schematic
(Bonneville, Eighty Eight, LSS, Regency, and Le Sabre). I can just
wire a fused ignition input voltage from the remote start to that
input which will solve my problem.
There another way to do that since the input to A7 comes from the
Park/Neutral Position (PNP) Switch (mounted at the transmission
linkage). It would be an easy thing to cut the wire right there and
apply the 12 volt ignition wire and not have to take anything apart
under the dash board.
Why would you WANT to disable DRLs????????
Just let the dang things light up. They don't cost you ANY gas.
They are required by law in quite a few countries - and the beauty of
the Pontiac system is it is impossible to walk away from your car
leaving the lights on if you just leave it on automatic.
On Thu, 02 Feb 2012 16:56:29 -0500, firstname.lastname@example.org wrote:
The reason why to disconnect the DRL is bacuse they don't play nice
with HID headlights which REQUIRE full voltage (12 volts+) to work
correctly. DRL only supplies around 8-10 volts which causes the HID
headlight to frequently not work or flicker.
replying to X-Eliminator , Tee 28 year veteran mechanic wrote:
hi people my name is Tee i am a mechanic for 28 years i have a 99 bonneville i
also went nuts tracing wires,relays,modules and so on untill i finally figured
how to make my headlights work with the main switch only solution is
disconnect the plug on the automatic light module there is two plugs disconnect
one of two with the green wire located behind radio and console close to the
floore its a box that controlls all the fancy lighting stuff once u disconnect
it it works like a basic system there is one downfall fog lights will not work
all other lights will operate fine if you like the fog light option you can do
what i did and make a new wire harness useing a power sorce from headlights its
not easy but it is the only way to make fog lights work once module is
disconnected so there is my solution to DRL lighting
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.