Brake light listed as 7443, but isn't it single filament? - Toyota Yaris Forums

hayden · 05-15-2011, 06:04 AM

I searched a lot and everything shows that the rear brake light (the ones on the side, not in the window) is the bulb type 7443. This is a dual filament bulb, though, and the brake lights are only ever on or off (suggesting it's single filament). The right bulb seems to be 7440.

Am I missing something or does it actually use a dual filament?

auxmike · 05-15-2011, 08:47 AM

Remove the original bulb from the car and have a look at it. It's a lot easier than researching it on the net.

hayden · 05-15-2011, 12:24 PM

Quote:

Originally Posted by auxmike

Remove the original bulb from the car and have a look at it. It's a lot easier than researching it on the net.

I'm dumb and you're right. I can even see the 7443 number on the bulb without taking it out. Thanks!

hayden · 05-15-2011, 03:19 PM

Also, it turns out that the brake lights aren't simply on-off. They're also running lights when the headlights are turned on, so my reason for thinking they were single filament was flat out wrong.

auxmike · 05-16-2011, 04:09 PM

Good sleuthing , welcome to Yarisworld!

05-15-2011, 06:04 AM	#1
hayden Drives: asd Join Date: Oct 2009 Location: dfw Posts: 42	Brake light listed as 7443, but isn't it single filament? I searched a lot and everything shows that the rear brake light (the ones on the side, not in the window) is the bulb type 7443. This is a dual filament bulb, though, and the brake lights are only ever on or off (suggesting it's single filament). The right bulb seems to be 7440. Am I missing something or does it actually use a dual filament?

05-15-2011, 08:47 AM	#2
auxmike Drives: 2008 HB, A/T, Power W/L/M Join Date: Oct 2008 Location: LI, New Yawk Posts: 2,063	Remove the original bulb from the car and have a look at it. It's a lot easier than researching it on the net. __________________ Never take eyes off opponent - Bruce Lee

05-16-2011, 04:09 PM	#5
auxmike Drives: 2008 HB, A/T, Power W/L/M Join Date: Oct 2008 Location: LI, New Yawk Posts: 2,063	Good sleuthing , welcome to Yarisworld! __________________ Never take eyes off opponent - Bruce Lee

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05-15-2011, 03:19 PM	#4
hayden Drives: asd Join Date: Oct 2009 Location: dfw Posts: 42	Also, it turns out that the brake lights aren't simply on-off. They're also running lights when the headlights are turned on, so my reason for thinking they were single filament was flat out wrong.