Ideal 550 Heavy‑Duty 12V 3‑Terminal Flasher (NOS, Boxed)

$24.99

type: Unknown Type
Vendor: CorvairFarmer

Description:

Ideal 550 Heavy‑Duty 12V 3‑Terminal Flasher (NOS, Boxed)

Vintage Ideal 550 heavy‑duty flasher, perfect for classic trucks, trailers, and commercial vehicles. This 12‑volt, 3‑terminal unit is DOT‑approved and designed for multi‑lamp turn‑signal and hazard circuits.

The metal canister is stamped:

“HEAVY DUTY FLASHER 550 12 VOLT DOT LAMP FUSE INPUT LEAD”

This tells us exactly what it is:

  • Brand: Ideal

  • Model: 550

  • Voltage: 12V

  • Type: Heavy‑Duty Thermal Flasher

  • Terminals: 3‑prong (L, P, X configuration)

  • DOT Approved: Yes

  • Era: 1960s–1990s aftermarket

  • Use Case: Multi‑lamp circuits, hazard flashers, towing setups

The 3‑terminal design means it supports indicator lamps and fused input circuits — common in trucks and commercial vehicles.

The Ideal 550 fits any 12‑volt, 3‑terminal flasher socket, including:

Light Trucks & SUVs

  • GM C/K series, Suburban, Blazer

  • Ford F‑Series, Bronco

  • Dodge D‑Series, Ramcharger

Commercial & Fleet

  • Delivery vans

  • Tow trucks

  • Municipal vehicles

  • Utility fleet trucks

Specialty Equipment

  • Farm tractors

  • Construction equipment

  • Trailers with multi‑lamp circuits

  • RVs and aftermarket wiring harnesses

Ideal was a trusted aftermarket brand, often used by truck shops and DOT fleets.

Features: • Genuine Ideal brand — established 1913 • Heavy‑Duty 12V flasher • 3‑terminal design (L/P/X) • Ideal for GM, Ford, Dodge trucks • Excellent for trailers, farm equipment, and fleet vehicles • NOS condition with original box

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