Radio bulb - The 1947 - Present Chevrolet & GMC Truck Message Board Network

skidoo · 12-19-2021, 12:12 PM

I have a 87 chevy wrangler which has a Electronic AM/FM Cassette radio. I cannot see what time it is or what station i am on anymore. Do these radios have a bulb that you can change for the display?

Jeepwm69 · 12-20-2021, 01:52 PM

I'm sure they do.

I recently had an old Pioneer shaft AM/FM Cassette worked on and there were two bulbs in there that backlit the digital display and the buttons.

They are called "grain of wheat" bulbs, if you wanted to do a web search.

Dead Parrot · 12-20-2021, 04:48 PM

Another option was a small base bayonet bulb ran somewhat below its normal voltage to increase lifespan. Pretty sure I have seen some radios in Pull-a-part that used the dash light bulb type setup. I think that most of the bulbs were replaceable but were normally considered a "life of the vehicle" thing and ease of replacement wasn't really a consideration.

If that radio is aftermarket, it may be new enough for the lights to have been LED.

**hooverfish** · 12-20-2021, 09:52 PM

If its stock cassette for 87 GM it's easy to take the faceplate off and change the 2 bulbs but you have to pull the radio out of the truck.
Just remove the two flat nuts on the volume and tuning controls and the faceplate comes right off.
Not sure of bulb part number, but they are actually similar to a 'grain of wheat'.

71gmcC15 · 12-21-2021, 07:02 AM

Look like a bulb number 74. From the picture. Hard ti say with out having it in my hand.

12-19-2021, 12:12 PM	#1
skidoo Registered User Join Date: Mar 2015 Location: alberta Posts: 23	Radio bulb I have a 87 chevy wrangler which has a Electronic AM/FM Cassette radio. I cannot see what time it is or what station i am on anymore. Do these radios have a bulb that you can change for the display?

12-20-2021, 01:52 PM	#2
Jeepwm69 Registered User Join Date: Jan 2009 Location: Arkansas Posts: 687	Re: Radio bulb I'm sure they do. I recently had an old Pioneer shaft AM/FM Cassette worked on and there were two bulbs in there that backlit the digital display and the buttons. They are called "grain of wheat" bulbs, if you wanted to do a web search.

12-20-2021, 04:48 PM	#3
Dead Parrot Registered User Join Date: Aug 2012 Location: Oklahoma City, OK Posts: 2,611	Re: Radio bulb Another option was a small base bayonet bulb ran somewhat below its normal voltage to increase lifespan. Pretty sure I have seen some radios in Pull-a-part that used the dash light bulb type setup. I think that most of the bulbs were replaceable but were normally considered a "life of the vehicle" thing and ease of replacement wasn't really a consideration. If that radio is aftermarket, it may be new enough for the lights to have been LED.

12-20-2021, 09:52 PM	#4
hooverfish Senior Member Join Date: Oct 2012 Location: Lexington, Ky Posts: 2,147	Re: Radio bulb If its stock cassette for 87 GM it's easy to take the faceplate off and change the 2 bulbs but you have to pull the radio out of the truck. Just remove the two flat nuts on the volume and tuning controls and the faceplate comes right off. Not sure of bulb part number, but they are actually similar to a 'grain of wheat'. Attached Images __________________ Larry 84 Chevy SWB, "Roy", dark blue OG paint, 5.7 LS1, 4L60, Vintage Air, 96k miles. "It's a sorry man who can't find his wife a good job"

12-21-2021, 07:02 AM	#5
71gmcC15 Registered User Join Date: Feb 2018 Location: Doland SD Posts: 836	Re: Radio bulb Look like a bulb number 74. From the picture. Hard ti say with out having it in my hand. __________________ ( second times the charm) 71 gmc c15 307 sbc 373 rear gears positrac sm 465 trans. ( not listed on spid but is original ) 94 chevy k1500 350 tbi 373 rear gears 4l60e one wheel peel. Gutless 07 gmc sierra classic rcsb 4.3 lt 5 speed w/t 04 chevy Silverado 1500 ext cab 5.3 4l60e. 81 chevy Scottsdale k10 muncie sm465 Np208 10 bolt 8.2 ( Old Green)



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