Automotive Flashers

Cooper Bussmann offers a complete line of flashers for a wide variety of applications. All Cooper Bussmann flashers meet SAE standards and other applicable state and federal guidelines. To select the proper replacement flasher, match these three specifications:

• Specific vs. Variable load. Specific load flashers are designed to flash only a certain number of lamps.       Variable load flashers can handle a range of amps, such as is required with a trailer in tow.

• Lamp capacity. Designates the total number of lamps in the circuit for the left or right directional signal.

• Number of terminals. Select either a two or three blade flasher, to match the socket in the panel.

Thermal and Electronic 12 and 24 Vdc Flashers

 Part No.  Blister Pack  Tri-Lingual Blister  Type  Terminals  Volts  Amps  Number of Bulbs
 NO.535      Thermal  3  6  5.2  2-6
 NO.550 X
X
 Thermal  3  12  12.8  2-6
 NO.552 X
   Thermal  2  12  12.8  2-6
 NO.575 X
   Thermal  2  12  12.8  1-8
 NO.577 X
   Thermal -Extra Loud  2  12  4  2-6
 NO.243      Heavy-duty electronic  2  12  25  12
 NO.244      Heavy-duty electronic  3  12  25  12
 NO.246      Heavy-duty electronic  3  12  25  *
 NO.726 X
   Heavy-duty electronic  4  12  12.6  2-4
 NO.727 X
   Heavy-duty electronic  5  12  12.6  2-4
 NO.756 X
   Heavy-duty electronic  3  12  12.6  2-6
 NO.757 X
   Heavy-duty electronic  3  12  12.6  2-6
 NO.758 X
   Heavy-duty electronic  3  12  12.6  2-6
 NO.759 X
   Heavy-duty electronic  3  12  12.6  3-6
 NO.760 X
   Heavy-duty electronic  3  12  12.6  2-6
 NO.761 X
   Heavy-duty electronic  3  12  12.6  2-6
 NO.762 X
   Heavy-duty electronic  4  12  12.6  3-6
 NO.763      Heavy-duty electronic  2  12  12  16
 NO.764      Heavy-duty electronic  2  12  12  20
 NO.850      Heavy-duty electronic  3  12  25  10HZ/5TS
 NO.852      Heavy-duty electronic  2  12  35  16HZ/8TS
 NO.232 X
X
 Super-duty electronic  2  12  20  1-10
 NO.233 X
   Super-duty electronic  3  12  20  1-10
 NO.234      Super-duty electronic  3  24  20  1-10

* Alternating

Thermal Flashers

• Uses heat build-up to flash circuit on and off.
• Features an audible click, alerting driver that a directional signal is engaged.
• Generally used in older model year vehicles.
• Operates correctly under variable load – flashing the designated vehicle lamps only; or additional lamps; when a trailer is in tow.
• Does not indicate lamp outage.

NO.535 & NO.550

Thermal Flashers - NO.535 & NO.550

NO.552, NO.575 & NO.577 (Extra Loud)

Thermal Flashers - NO.552, NO.575 & NO.577 (Extra Loud)

Heavy-Duty Electronic Flashers

• These flashers rely on electronic circuitry - not heat - to operate. Excellent performance in extreme climates.
• Original equipment on many late-model cars and light trucks - both domestic and imported.
• Direct plug-in replacement. No adapter required.
• Flashes at twice the normal speed to indicate lamp outage, and features an audible click when engaged.
• Electronic design provides superior service life.

NO.243, NO.244 & NO.246

NO.243, NO.244 & NO.246 - Heavy-Duty Electronic Flashers

NO.761, NO.763, 764 & NO.762

NO.761, NO.763, 764 & NO.762

NO.726, NO.727 & NO.756, 757, 758, 759, 760

NO.726, NO.727 & NO.756, 757, 758, 759, 760

NO.850 & NO.852

NO.850 & NO.852 - Heavy-Duty Electronic Flashers

Super-Duty Electronic

• Provides variable load functionality in heavy-duty applications.
• Replacement flasher for domestic cars, light trucks and vans.
• Electronic design provides superior service life.

NO.232, NO.233 & NO.234

NO.232, NO.233 & NO.234 - Super-Duty Electronic

Troubleshooting Guide

 Symptom  Solution
 • Signal lamps light, but don't flash  • Check and/or replace flasher
 • Signal lamps do not operate on either side of vehicle  • Check and/or replace fuse
 • Both signal lamps are out on one side of vehicle  • Check for bad lamps • Check grounding and wiring from turn signal lever
 • One signal lamp is out on one side of vehicle  • Check and/or replace lamp
 • Signal lamp flashes too rapidly on one side of vehicle  • Check and/or replace lamps
 • Check whether the proper lamp is installed (A heavy-duty lamp in a standard circuit will flash too rapidly.)
 • Signal lamp flashes too slowly on one side of vehicle  • Check whether the proper lamp is installed (A standard lamp in a heavy-duty circuit will flash too slowly)