Wiring Adapters

Browse our wiring adapters for Kidde, Firex or Nighthawk products. These adapters are part of Kidde's line of fire safety accessories, replacement parts, batteries, and other items.

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Firex to Kidde Quick Convert Adapter

SKU: 21028270
Model: KA-F2

The quick convert adapter allows the installation of a new Kidde alarm to an existing competitive wiring harness. This allows for easy installation when replacing the specified smoke alarm brands with a Kidde product. The smoke alarm adapter also allows the specified approved brands and models to be interconnected with other Kidde product. For use with Firex wire-in smoke alarms.

Out of stock
$3.99

First Alert® & BRK® to Kidde, Quick Convert Adapter

SKU: 21028268
Model: KA-B2

Helps you to quickly replace First Alert® or BRK® wire-in smoke alarms.

The KA-B2 adapter can be used on all AC/DC Kidde smoke and combination alarms.

Each adapter includes a 5 year limited warranty.

In stock
$3.99

Quick Connect Adapter for Hardwired Smoke & Carbon Monoxide Detectors

SKU: 21032239
Model: 20-9003

Alarm replacement is easy with this adapter that connects select compatible Kidde and FireX wiring harnesses to compatible new Kidde hardwired alarms* — no wire stripping or wire nuts needed. Check the User Guide or Compatibility Guide to verify compatibility before purchase and installation.

  • Connects select Kidde & FireX wire harnesses to new compatible Kidde alarms*
  • Fast installation with no rewiring
  • Quickly connect the adapter without stripping wires or using wire nuts
  • Easily plugs into back of your new Kidde alarm
In stock
$7.99

Quick Connect Harness

SKU: 21027590
Model: 21027590
Out of stock
$0.99