Tung‑Sol 852/5X Ever‑Flash Heavy‑Duty 12V Flasher (NOS, Boxed)

A heavy‑duty thermal flasher designed for:

• Multi‑lamp hazard circuits

• Towing setups

• DOT fleet vehicles

• Fire apparatus

• Commercial trucks

• Agricultural and construction equipment

It belongs to Tung‑Sol’s Ever‑Flash line — their top‑tier, long‑life flasher series.

Key identifiers

• Brand: Tung‑Sol

• Model: 852/5X

• Series: Ever‑Flash (premium heavy‑duty)

• Voltage: 12V

• Terminals: 2‑prong

• Use case: High‑load, high‑heat environments

• Era: 1960s–1980s commercial aftermarket

Why the 852/5X Matters

This model is significantly rarer than:

• Tung‑Sol 550

• Tung‑Sol 552

• Ideal 536

• Signal‑Stat 160 / 175 / 180

The Ever‑Flash branding indicates:

• Thicker bimetallic strip

• Higher thermal mass

• More stable blink rate under load

• Longer service life

• Better performance in harsh environments

Collectors value it because:

• It’s a commercial‑grade unit

• Packaging is distinctive (yellow/black)

• NOS units are scarce

• It cross‑references to multiple heavy‑duty families

Vehicle & Equipment Compatibility

The 852/5X is universal across 12‑volt, 2‑terminal systems, but especially common in:

Fleet & Commercial Trucks

• International Harvester

• Mack

• Kenworth

• Peterbilt

• Freightliner

• Ford C‑Series / L‑Series

• GM medium‑duty trucks

Municipal & Emergency Vehicles

• Fire trucks

• Ambulances

• Snow plows

• Utility service trucks

Trailers & Equipment

• Commercial box trailers

• Utility trailers

• Agricultural tractors

• Construction equipment

• RVs and motorhomes

If it had a heavy‑duty turn‑signal or hazard circuit, the 852/5X fits.

Cross‑Reference Family

Each item below is a direct functional equivalent:

• Tung‑Sol 550

• Signal‑Stat 180

• Signal‑Stat 175

• Signal‑Stat 160

• Ideal 536

• Wagner 552‑HD

This makes the 852/5X extremely flexible for restorations.