Honda INSIGHT 2021 Owner's Manual page 588

uuReplacing Light BulbsuRear Turn Signal Light Bulbs
Rear Turn Signal Light Bulbs
When replacing, use the following bulbs.
Rear Turn Signal Light: 21 W (Amber)
Bulb
Brake and Rear Side Marker Lights
Brake and rear side marker Lights are LED type. Have an authorized Honda dealer
inspect and replace the light assembly.
586
1. Use a Phillips-head screwdriver or socket to
Bolts
remove the bolts.
2. Pull the light assembly out of the rear pillar.
3. Turn the socket counterclockwise and
remove it.
Socket
4. Remove the old bulb and insert a new bulb.
5. Slide the light assembly onto the guide on
the body.
6. Align the pins with the body grommets,
then push in until they fully seat.