HomeElectrical, Lighting and Body > SwitchesStandard Ignition TW-91 Turn Signal Switch
Part #: TW-91

Standard Ignition TW-91 Turn Signal Switch

⚙️ 5 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$69.80Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Buick, Cadillac, and Oldsmobile, Century, DeVille, Fleetwood, and 98
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Turn Signal Switch for Buick, Cadillac, and Oldsmobile

The Standard Ignition TW-91 turn signal switch is designed to provide dependable electrical control for select Buick, Cadillac, and Oldsmobile vehicles. Engineered as a new replacement part, it ensures consistent performance and compatibility with your vehicle's original specifications.

  • New Standard Ignition turn signal switch, part number TW-91
  • Compatible with Buick 98 and Century, Cadillac DeVille and Fleetwood models
  • Features a male connector with one connector cavity
  • Equipped with 13 female blade terminals for secure electrical connections
  • Designed for easy installation and reliable operation

Detailed Product Features and Specifications

This turn signal switch from Standard Ignition is a direct replacement part tailored for specific GM vehicles including Buick 98 and Century, Cadillac DeVille and Fleetwood, and Oldsmobile models. The TW-91 switch includes a male connector with a single cavity, ensuring proper fitment and electrical compatibility. It has 13 female blade terminals, which provide a secure and stable connection to your vehicle's wiring harness. The blade terminal design supports efficient current flow and durability under normal operating conditions.

Common Applications and Problem Resolution

  • Restores turn signal functionality in Buick 98 and Century models
  • Replaces faulty or worn switches in Cadillac DeVille and Fleetwood vehicles
  • Solves intermittent or non-responsive turn signal issues
  • Addresses electrical connection problems caused by damaged terminals
  • Eliminates erratic turn signal behavior due to switch failure

Installation Notes and Tips

Installation of the Standard Ignition TW-91 turn signal switch requires basic automotive electrical knowledge. Ensure the vehicle's battery is disconnected before beginning installation to prevent electrical shorts. The male connector with one cavity should align precisely with the vehicle's wiring harness. Verify that all 13 female blade terminals are properly seated to maintain secure electrical contact. Consult the vehicle's service manual for detailed removal and installation procedures specific to Buick, Cadillac, or Oldsmobile models.

Quality Assurance and Warranty Information

Standard Ignition manufactures the TW-91 turn signal switch to meet or exceed OEM standards for fit, form, and function. This new part undergoes quality control inspections to ensure reliable operation. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in materials and workmanship. Refer to the product documentation or contact the distributor for exact warranty terms.

BrandStandard Ignition
Part NumberTW-91
Connector GenderMale
DisplayedYes
New or RemanNew
Number Of Connector Cavities1
Terminal GenderFemale
Terminal TypeBlade Terminals

This part fits 5 vehicles. Search below:

YearMakeModelPositionNotes
1992BuickCenturyN/Aw/o Pushbutton
1991BuickCenturyN/Aw/o Pushbutton
1989CadillacDeVilleN/A
1989CadillacFleetwoodN/A
1989Oldsmobile98N/Aw/ Electronic Push Button Control

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

19970731S463653-58883DL6216DS178S3308SM255SW806

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.