Ideal 536 Heavy‑Duty 12V Flasher (12A Variant, NOS, Boxed)

Description:

Ideal 536 Heavy‑Duty 12V Flasher (12A Variant, NOS, Boxed)

Ideal 536 — Variant Identification

The canister is stamped:

HEAVY DUTY FLASHER — 536 — 12 VOLT — USE 12 AMP FUSE IN INPUT LEAD

This tells us:

• Model: 536

• Voltage: 12V

• Fuse requirement: 12A (variant)

• Terminals: 2‑prong

• Type: Thermal flasher

• Brand: Ideal (est. 1913)

• Era: 1960s–1980s aftermarket

The box confirms:

Ideal 536 — Heavy Duty — For All 12V Cars & Trucks — 2 Terminals

This is the same universal heavy‑duty flasher as your other 536 units, but with a different internal bimetallic strip rating, which is why the fuse requirement differs.

🚗 Compatibility

Because it’s a universal 2‑terminal 12V flasher, the 536 fits:

• All 12V passenger cars (Chevrolet, Ford, Chrysler, AMC)

• All 12V trucks (C/K, F‑Series, D‑Series, IH)

• Trailers, RVs, tractors, construction equipment

• Any aftermarket wiring harness using a 2‑terminal flasher

If it blinked a turn signal or hazard light in a 12‑volt system, the 536 fits.

🛠️ Why This Variant Matters

The 12‑amp fuse requirement indicates:

• Lower internal current draw

• Slightly faster thermal cycling

• Better performance on lighter‑load circuits

• Ideal for cars with fewer bulbs or lower‑wattage lamps

Most Ideal 536 units were rated for 14 amps, so this 12‑amp version is a less common production run.

For your catalog, this should be listed as:

Ideal 536 (12A variant) — Heavy‑Duty 12V Flasher

Vintage Ideal 536 heavy‑duty flasher, correct for all 12‑volt cars and trucks using 2‑terminal turn‑signal or hazard circuits. This is the 12‑amp fuse variant, ideal for lighter‑load circuits and period‑correct restorations.

Features: • Genuine Ideal brand (est. 1913) • Model 536 — heavy‑duty 12V flasher • 12‑amp fuse requirement (variant) • Fits all 12V cars, trucks, trailers, and equipment • NOS condition with original packaging