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Changing Head Light Bulbs Lamps (Post 2 of 27)

Details herein for stock OEM lamps as well as aftermarket versions (LED, HID).

The Factory version supplied on the 1984-1987 Buick Regals was a sealed halogen headlight for both the low and high beam lights.
They measure 4″ tall by 6″ wide.

There’s numerous aftermarket versions made from LED lights as well as HID units.
Both of these options offer much more improved lighting versus the OEM products.
Of course, that means the price for these choices is more than the stock items.

HID units (low beam only) can be acquired from $60 and up.
LED lights can be acquired from $100 and up. Way up.

Costs are definitely a big factor here.
The more expensive units are absolutely worth the extra outlay for them, but you have to judge how much you’re willing to spend.
(the most expensive LED set is around $1200! But it’s also the best set.)

The LED versions come in many different visual styles in their setup within the housings.
The HID headlights are more similar looking to the stock setup (they just have better bulbs).

Lots of Turbo Buick owners have tried various versions of the LED headlights and report that cheap lights are just that.
Some don’t throw off a lot of light, some blind other drivers if they’re not adjusted correctly (or sometimes even if they are).
Other people prefer certain patterns on the way the bulbs are placed within the housings (some work better than others).

We have 55 watt HID’s on our Buick Grand National and are pretty happy with them.
Even with dark tinted headlight covers, they throw off a bit more light (thru them) than the stock headlights do. They’re really bright when the covers are removed!

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HEADLIGHT SPECS:

OEM BULB NUMBER:
Low Beam H4656
High Beam H4651

SOCKET COLOR: black (on both low and high beam)

NUMBER OF WIRES ATTACHED TO SOCKET:
Low Beam – 4
High Beam – 2

WIRE COLORS & PURPOSE & WHERE THEY GO:

LH (driver side) (low beam) headlight:
CONNECTOR 1: Power wire. Tan wire in (to low side bulb) from (low side) dimmer, tan out to RH headlight (to low side bulb).
CONNECTOR 2: Power wire. Light green in from (high side) dimmer, WHICH ALSO connects to light green wire that runs to (high side) RH bulb, WHICH ALSO connects to lt green / black wire that runs to LH high beam light.
CONNECTOR 3: Black wire out to ground.

RH (passenger side) (low beam) headlight:
CONNECTOR 1: Power wire. Tan wire in from (low side) of LH bulb.
CONNECTOR 2: Power wire. Light green in from (high side) of LH (lowbeam) light, WHICH ALSO connects to light green wire that runs to (high side) RH high beam light.
CONNECTOR 3: Black wire out to ground.

LH (driver side) (high beam) headlight:
CONNECTOR 1: Power wire. Light green in from (high side) of LH (lowbeam) light.
CONNECTOR 2: Black wire out to ground.

RH (passenger side) (high beam) headlight:
CONNECTOR 1: Power wire. Light green in from (high side) of RH (lowbeam) light.
CONNECTOR 2: Black wire out to ground.

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headlight wiring diagram

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HOW TO CHANGE BULB:

A T15 torx removes the (outer) headlight bezel. 4 screws hold it on.
A phillips screwdriver removes the 4 screws that secure the bezel that’s ON the headlights.
Unplug the socket on the backside of the headlight.
Replace headlight.
Reverse the steps to reassemble.

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(The car shown in pics has HID lights installed as the low beam units. For the high beams, a Sylvania Halogen stock type version is used.)

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BEFORE THE WORK STARTS:
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REMOVING OUTER HEADLIGHT BEZEL:

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REMOVING INNER HEADLIGHT BEZEL:

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REMOVING HIGH BEAM HEADLIGHT:

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This is part of an ongoing series about the details & specifics on Changing Light Bulbs in your Buick Turbo Regal:

1) Overview
2) Head Lights (THIS page)
3) Bumper Lights (running lights, turn signals)
4) Front Corner Side Marker Lights
5) Front Lower Cornering Lamps (Limited models)
6) Under Hood Light
7) Brake & Turn Tail Lights
8) Backup Lights (reverse light)
9) Rear Running Tail Lights (center & side corner marker lights)
10) License Plate Light
11) Trunk Light
12) Under Dash / Courtesy Lights (driver / passenger side)
13) Glovebox Light
14) Dash plaque (usually on Limited models)
15) Dash Gauges / Side Warning Lights (analog & digital dash)
16) HVAC Light (heater / AC)
17) Console Shifter Indicator Light
18) Ashtray Light on Non-Console Cars
19) radio light bulbs
20) Rear Window Defogger Button Light
21) Rear View Mirror Map Lights (upgraded option, not standard on Regals)
22) Passenger Visor Vanity Mirror Light
23) Dome Light (t-top & hardtop; factory & upgraded hardtop versions)
24) CHMSL (Center High Mounted Stop Light, AKA Third Brake Light)
25) Lower Door Panel Courtesy Lights (Limited models)
26) Aftermarket Dash / Other Extra Add-on Gauge Lights (a-pillar, console under radio, etc)
27) Opera / Coach Lights (Limited models)

You can click any link above and be taken to the light of your choice.

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