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Standard Ignition DS-990 Headlight Dimmer Switch
| Brand | Standard Ignition DS-990 |
|---|---|
| Attachment Method | Bolt On |
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Cruise Control Cancel Included | No |
| Cruise Control On/Off Operator Inc | No |
| Cruise Control Resume Included | No |
| Cruise Control Set Included | No |
| Cruise Control Speed Adjustment In | No |
| Displayed | Yes |
| Fog Light Operator Included | Yes |
| Functions | Combination Switch |
| Indicator Markings Included | Yes |
| Latching High Beam Operator Includ | Yes |
| Main Light Operator Included | Yes |
| Momentary High Beam Flasher Includ | Yes |
| New or Reman | New |
| Number Of Connector Cavities | 1 |
| Rear Window Washer Spray Included | No |
| Rear Window Wiper Delay Control In | No |
| Rear Window Wiper Speed Setting In | No |
| Running Light Operator Included | No |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Turn Signal Control Included | Yes |
| Turn Signal/Directional Indicator | Yes |
| Voltage | 12 |
| Windshield Washer Spray Included | No |
| Windshield Wiper Delay Setting Inc | No |
| Windshield Wiper Speed Setting Inc | No |
| Fits | Jeep · 34 vehicles |
Bolt-on installation. Female connector and 18 blade terminals for a straightforward electrical swap.
Combination switch. Integrates headlight dimmer, turn signal, fog light, and main light controls.
Copper alloy conductors. Deliver strong conductivity with low resistive losses for reliable switching.
Cross-references T Series DS990T, 1S2949 and 2-TSS83 for the same application. See all 14.
Headlight Dimmer Switch for Jeep Wrangler and TJ
Restore reliable lighting control with this Standard Ignition headlight dimmer switch, part number DS-990. It is built for Jeep Wrangler and Jeep TJ applications that use a fog-light-equipped combination switch, with direct electrical switching for the headlight dimmer, turn signal, and fog light functions.
Key Features
- Bolt-on attachment method for direct replacement
- Female 1-way connector with rectangular shape
- 18 blade terminals for secure electrical contact
- Combination switch functions with headlight dimmer, turn signal, and fog light control
- Latching high beam operator and momentary high beam flasher included
- Main light operator, indicator markings, and turn signal control included
- 12-volt new replacement part
- Copper alloy conductors for low-resistance electrical flow
- 100% tested for mechanical and electrical switching performance
Detailed Description
Standard Ignition DS-990 is a headlight dimmer switch engineered for service replacement on select Jeep Wrangler and Jeep TJ models equipped with fog lights. The switch combines multiple lighting controls into one assembly, including the main light operator, dimmer functions, fog light operator, and turn signal control. Its robust construction and copper alloy conductors support consistent electrical conductivity, while the tested switch design helps verify proper mechanical action and circuit performance.
This part cross-references Standard Motor Products DS990T for the same application. If you are replacing a worn Jeep Wrangler headlight dimmer switch or a Jeep TJ combination switch assembly, DS-990 provides the correct electrical layout for the listed fog-light-equipped vehicles.
What It Helps Fix
- Intermittent or failed headlight dimmer operation
- High beams that do not latch or flash correctly
- Turn signal switch issues within the combination switch assembly
- Fog light control problems on equipped Jeep Wrangler and Jeep TJ models
- Loose, worn, or electrically inconsistent steering-column switch operation
Installation Notes and Tips
Fits 2006 Jeep Wrangler, N/A, w/ Front Fog Lights. Fits 2006 Jeep Wrangler, N/A, Compatible with vehicles equipped with fog lights. Fits 2001-2004 Jeep Wrangler, N/A, Compatible with vehicles equipped with fog lights. Fits 2005 Jeep Wrangler, N/A, w/ Fog Lights; Headlight, Dimmer and Turn Signal Switch. Fits 2001-2004 Jeep TJ, N/A, w/ Fog Lights; Combo Switch Assembly. Fits 2001-2004 Jeep TJ, N/A, Compatible with vehicles equipped with fog lights. Fits 2001-2002 Jeep TJ, N/A.
Verify the connector style, terminal count, and fog-light-equipped configuration before installation. This is a bolt-on replacement with a single rectangular female connector and blade terminals, so matching the original switch layout is important for proper operation.
Quality Assurance
Standard Ignition builds this switch with durable materials and copper alloy conductors, then tests each unit for mechanical and electrical switching performance before release.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2006 | Jeep | Wrangler | — | — | N/A | w/ Front Fog Lights |
| 2006 | Jeep | Wrangler | 4.0L | L6 | N/A | Compatible with vehicles equipped with fog lights. |
| 2006 | Jeep | Wrangler | 2.4L | L4 | N/A | Compatible with vehicles equipped with fog lights. |
| 2006 | Jeep | Wrangler | — | — | N/A | Compatible with vehicles equipped with fog lights. |
| 2006 | Jeep | Wrangler | 2.4L | L4 | N/A | — |
| 2006 | Jeep | Wrangler | 4.0L | L6 | N/A | — |
| 2005 | Jeep | Wrangler | 2.4L | L4 | N/A | w/ Fog Lights; Headlight, Dimmer and Turn Signal Switch |
| 2005 | Jeep | Wrangler | 4.0L | L6 | N/A | w/ Fog Lights; Headlight, Dimmer and Turn Signal Switch |
| 2005 | Jeep | Wrangler | 2.4L | L4 | N/A | — |
| 2005 | Jeep | Wrangler | 4.0L | L6 | N/A | — |
| 2004 | Jeep | TJ | — | — | N/A | w/ Fog Lights; Combo Switch Assembly |
| 2004 | Jeep | TJ | — | — | N/A | Compatible with vehicles equipped with fog lights. |
| 2004 | Jeep | Wrangler | — | — | N/A | w/ Fog Lights; Combo Switch Assembly |
| 2004 | Jeep | Wrangler | — | — | N/A | — |
| 2004 | Jeep | Wrangler | — | — | N/A | Compatible with vehicles equipped with fog lights. |
| 2003 | Jeep | TJ | — | — | N/A | Compatible with vehicles equipped with fog lights. |
| 2003 | Jeep | TJ | — | — | N/A | w/ Fog Lights; Combo Switch Assembly |
| 2003 | Jeep | Wrangler | — | — | N/A | — |
| 2003 | Jeep | Wrangler | — | — | N/A | Compatible with vehicles equipped with fog lights. |
| 2003 | Jeep | Wrangler | — | — | N/A | w/ Fog Lights; Combo Switch Assembly |
| 2002 | Jeep | TJ | — | — | N/A | w/ Fog Lights; Combo Switch Assembly |
| 2002 | Jeep | TJ | — | — | N/A | Compatible with vehicles equipped with fog lights. |
| 2002 | Jeep | TJ | — | — | N/A | — |
| 2002 | Jeep | Wrangler | — | — | N/A | Compatible with vehicles equipped with fog lights. |
| 2002 | Jeep | Wrangler | — | — | N/A | — |
| 2002 | Jeep | Wrangler | — | — | N/A | w/ Fog Lights; Combo Switch Assembly |
| 2001 | Jeep | TJ | — | — | N/A | w/ Fog Lights; Combo Switch Assembly |
| 2001 | Jeep | TJ | 2.5L | L4 | N/A | — |
| 2001 | Jeep | TJ | 4.0L | L6 | N/A | — |
| 2001 | Jeep | TJ | — | — | N/A | Compatible with vehicles equipped with fog lights. |
| 2001 | Jeep | Wrangler | — | — | N/A | w/ Fog Lights; Combo Switch Assembly |
| 2001 | Jeep | Wrangler | 2.5L | L4 | N/A | — |
| 2001 | Jeep | Wrangler | 4.0L | L6 | N/A | — |
| 2001 | Jeep | Wrangler | — | — | N/A | Compatible with vehicles equipped with fog lights. |
| No rows match your filter. | ||||||