Automotive Flashers

The Bussmann series line of 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.
Part numbering system:
Trad'l Pack (1 per bag, 10 per shelf carton, 250 per master carton)
NO.XXX
Retail packs (1 per pack, 5 packs per shelf carton , 120 per master carton) BP/XXX-RP

LED FLASHERS

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  • Used with LED headlights.
  • LED headlights require less current so using mechanical flashers will cause the flasher to operate erratically, flashing too fast or too slow.
Part no. Trad'l pack  Retail pack Terminals Volts Amps Number of bulbs
NO-727-LED X - 5 12.8 12.6 2-6
NO-758-LED X - 3 12.8 12.6 2-6
NO-759-LED X - 3 12.8 12.6 2-6
NO-760-LED X - 3 12.8 12.6 2-6
NO-762-LED X - 3 12.8 12.6 2-6

LIGHTING CONTROL MODULES

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  • Used to control all of a vehicle’s lights, including the automatic headlamp shutoff.
  • Generally located in a box that’s directly over the accelerator pedal.
Part no. Trad'l pack  Retail pack Terminals Volts Amps Rated load range   Rated voltage
NO-468 X - 9 12.8 2.1 1 to 6 SAE #1156 Lamps 11 to 15 Vdc
NO-470 X - 5 12.8 2.1 Fixed 2 for Lamps
4 for Hazards
11 to 15 Vdc
NO-455 X - 10 12.8 2.1 1 to 6 SAE #1156 Lamps 11 to 15 Vdc
NO-487 X - 8 12.8 2.1 1 to 6 SAE #1156 Lamps 11 to 15 Vdc

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.
Part no. Trad'l pack  Retail pack  Terminals  Volts  Amps Number of bulbs
 NO.535 X  -  3  6  5.2  2-6
 NO.550 X X  3  12  12.8  2-6
 NO.552 X X  2  12  12.8  2-6
 NO.575 X X  2  12  12.8  1-8
 NO.577 X X  2  12  14  2-6

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.
Part no. Trad'l pack  Retail pack  Terminals  Volts  Amps Number of bulbs
NO.243 X -  2  12  25  12
 NO.244 X -  3  12  25  12
 NO.246 X -  3  12  25  *
 NO.726 X X  4  12  12.6  2-4
 NO.727 X X  5  12  12.6  2-4
 NO.756 X X  3  12  12.6  2-6
 NO.757 X X  3  12  12.6  2-6
 NO.758 X X  3  12  12.6  2-6
 NO.759 X X  3  12  12.6  3-6
 NO.760 X X  3  12  12.6  2-6
 NO.761 X X  3  12  12.6  2-6
 NO.762 X X  4  12  12.6  3-6
 NO.763 X -  2  12  12  16
 NO.764 X -  2  12  12  20
 NO.850 X -  3  12  25  10HZ/5TS
 NO.852 X -  2  12  35  16HZ/8TS

*Alternating

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 FLASHERS

  • Provides variable load functionality in heavy-duty applications.
  • Replacement flasher for domestic cars, light trucks and vans.
  • Electronic design provides superior service life.
Part no. Trad'l pack  Retail pack  Terminals  Volts  Amps Number of bulbs
 NO.232 X X  2  12  20  1-10
 NO.233 X X  3  12  20  1-10
 NO.234 X X  3  24  20  1-10

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)