Testing a Factory AM Radio - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mparcel · 04-23-2007, 05:51 PM

I have the factory AM radio out of my 72 and also a tested working one I bought on evilbay as well as a new factory speaker because the one I had was a mouse nest. I plugged everything back in last night and can’t get either of the radios to do anything. I have followed the power wire that plugs into the speaker connection to the fuse box and it seems to be fine (no breaks). Any suggestions on how I can test these to see where my problem is?? Can I go direct from the positive post on the battery to the positive input on the radio? I don’t want to blow anything up in the process – my wife still can’t understand why I want a AM radio in the truck to begin with or why I would want to spend all my free time messing (her words)

with a beat up old truck. Thanks for your help!

67CHIP72 · 04-23-2007, 06:10 PM

Check the fuse?

mparcel · 04-23-2007, 06:33 PM

I did and it seems to be fine - I will replace it just to be on the safe side.

**john** · 04-23-2007, 06:49 PM

Do you have a good ground to the radio?

mparcel · 04-23-2007, 06:52 PM

John - no ground - just sat the radios on the seat and plugged them in - is that my problem??

**CPNE** · 04-23-2007, 07:30 PM

Yes it needs to be grounded

northerngmc · 04-23-2007, 09:32 PM

First off, I think you have found my wife!

Second, yes the radio needs to be grounded.

Thirdly, take a test light and check if you have power at the fuse box and and the end of the wire.

cdowns · 04-23-2007, 09:40 PM

ground and an antenna help radios work

mparcel · 04-24-2007, 12:51 PM

Thanks to everyone who responded – I didn’t realize that they had to be grounded – I will check them tonight after I ground them and I am sure they will work – I am new at this and I have allot to learn. I would be totally lost without this site and all your help.
Thanks again – I am sure this won’t be my last question.

04-23-2007, 05:51 PM	#1
mparcel Junior Member Join Date: Mar 2007 Location: Montana Posts: 34	Testing a Factory AM Radio I have the factory AM radio out of my 72 and also a tested working one I bought on evilbay as well as a new factory speaker because the one I had was a mouse nest. I plugged everything back in last night and can’t get either of the radios to do anything. I have followed the power wire that plugs into the speaker connection to the fuse box and it seems to be fine (no breaks). Any suggestions on how I can test these to see where my problem is?? Can I go direct from the positive post on the battery to the positive input on the radio? I don’t want to blow anything up in the process – my wife still can’t understand why I want a AM radio in the truck to begin with or why I would want to spend all my free time messing (her words) with a beat up old truck. Thanks for your help! Last edited by mparcel; 04-23-2007 at 05:52 PM.

04-23-2007, 06:10 PM	#2
67CHIP72 STOLEN Join Date: Jun 2006 Location: Orange County Posts: 1,022	Re: Testing a Factory AM Radio Check the fuse? __________________ In Search Of

04-23-2007, 06:33 PM	#3
mparcel Junior Member Join Date: Mar 2007 Location: Montana Posts: 34	Re: Testing a Factory AM Radio I did and it seems to be fine - I will replace it just to be on the safe side.

04-23-2007, 06:49 PM	#4
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: Testing a Factory AM Radio Do you have a good ground to the radio? __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

04-23-2007, 06:52 PM	#5
mparcel Junior Member Join Date: Mar 2007 Location: Montana Posts: 34	Re: Testing a Factory AM Radio John - no ground - just sat the radios on the seat and plugged them in - is that my problem?? Last edited by mparcel; 04-23-2007 at 06:52 PM.

04-23-2007, 07:30 PM	#6
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	Re: Testing a Factory AM Radio Yes it needs to be grounded __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

04-23-2007, 09:32 PM	#7
northerngmc Registered User Join Date: Jan 2004 Location: Whitehorse YK Canada Posts: 2,651	Re: Testing a Factory AM Radio First off, I think you have found my wife! Second, yes the radio needs to be grounded. Thirdly, take a test light and check if you have power at the fuse box and and the end of the wire. __________________ Blaine 59 GMC 9314 a.k.a. Whoopee 68 C20 50th Anniversary a.k.a. The Rat http://www.flickr.com/photos/northerngmc/ http://www.members.tripod.com/P-wee/index_032.htm 1.61803 is one H of a lot better than 3.14159, no really it is!

04-23-2007, 09:40 PM	#8
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Testing a Factory AM Radio ground and an antenna help radios work __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

04-24-2007, 12:51 PM	#9
mparcel Junior Member Join Date: Mar 2007 Location: Montana Posts: 34	Re: Testing a Factory AM Radio Thanks to everyone who responded – I didn’t realize that they had to be grounded – I will check them tonight after I ground them and I am sure they will work – I am new at this and I have allot to learn. I would be totally lost without this site and all your help. Thanks again – I am sure this won’t be my last question.



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