markpwhit Posted January 25, 2013 Share Posted January 25, 2013 looking for some tips on how to hook up a cb radio on a b model positive ground system any help would be appreciated Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/ Share on other sites More sharing options...
GearheadGrrrl Posted January 26, 2013 Share Posted January 26, 2013 Unless you can find a CB radio with an ungrounded case, you'll have to convert the truck to negative ground. Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159778 Share on other sites More sharing options...
other dog Posted January 26, 2013 Share Posted January 26, 2013 I've hooked up many cb's in positive ground F models and my B model, you just have to hook them up "backwards"- you have to ground the hot (fused) wire on the radio, run the other to the switch or what ever power source you're tapping into. 1 Quote Producer of poorly photo-chopped pictures since 1999. Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159785 Share on other sites More sharing options...
farmer52 Posted January 26, 2013 Share Posted January 26, 2013 Do you talk backwards? Quote Ken PRR Country and Charter member of the "Mack Pack" Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159788 Share on other sites More sharing options...
other dog Posted January 26, 2013 Share Posted January 26, 2013 Do you talk backwards? I talk backwoods redneck hillbilly, is that the same thing? 1 Quote Producer of poorly photo-chopped pictures since 1999. Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159790 Share on other sites More sharing options...
39 Baby Mack Posted January 26, 2013 Share Posted January 26, 2013 Use to do this many times for guys at our place.You have to mount the radio in a box or with rubber to keep it insulated from the chassis ground.Then just hook the ground of the truck which is positive to the red (pos.) lead on the radio and the hot side of the truck which is negative to the black (neg.) lead on the radio.You also have to insulate the antenna from chassis ground because it also feeds ground back to the radio through the coax cable.A radio guy told me one time to cut the ground in the coax cable and install a resistor in line with it and you wouldn't need to insulate the antenna. also this would not affect the ground plane of the antenna and make it work much better which it did. Unfortunately I can't remember the value of the resistor. Maybe someone else can help you with the resistor value you would need for this.There our also many people that sell power inverters for antiques which would also probably do the job although they are as a rule a little on the pricey side.Ron Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159791 Share on other sites More sharing options...
41chevy Posted January 26, 2013 Share Posted January 26, 2013 Do you talk backwards? Not if you talk into the speaker and listen to the mike... 1 Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159795 Share on other sites More sharing options...
GreenGiant2 Posted January 26, 2013 Share Posted January 26, 2013 you can do it just as 39 baby mack said, but it has to be insulated or you get a wisp of smoke. dont let any od the cb touch metal. gg2 Quote We the unwilling, Lead by the unqualified, are doing the impossible, for the ungrateful. Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159806 Share on other sites More sharing options...
39 Baby Mack Posted January 26, 2013 Share Posted January 26, 2013 Here's a link to Antique Automobile Radios in FL.-------- they sell a power inverter that will do what you want it to do.www.radiosforoldcars.com/power.htmYou can use one of these and not worry about insulating the radio or antenna.Ron Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159858 Share on other sites More sharing options...
GearheadGrrrl Posted January 26, 2013 Share Posted January 26, 2013 Just switch to negative ground and get it over with- The insulating the radio BS and inverters ultimately fail anyway. Or get one of the $40 battery powered handheld CBs. Better yet, get a ham license and leave the clowns on 11 meters behind! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159876 Share on other sites More sharing options...
mowerman Posted January 26, 2013 Share Posted January 26, 2013 ya,as tom said just hook the black wire to the juice wire,,,use a tester to see witch wire is live.then ground the red..good luck...bob Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159880 Share on other sites More sharing options...
other dog Posted January 26, 2013 Share Posted January 26, 2013 ya,as tom said just hook the black wire to the juice wire,,,use a tester to see witch wire is live.then ground the red..good luck...bobthat's all I ever did Bob, and they worked fine. Got one in the mixer now that works fine, I never did any of that other stuff. Quote Producer of poorly photo-chopped pictures since 1999. Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159882 Share on other sites More sharing options...
mowerman Posted January 26, 2013 Share Posted January 26, 2013 that's all I ever did Bob, and they worked fine. Got one in the mixer now that works fine, I never did any of that other stuff.lool...i know what you mean,,,niether did i ,,,, i hooked allotta them up in the 70,s,,,just like you said there,,,you see gearhead girls oppinion,,,wow good advice from a obambi lover.hahahahahahahahahahahahahahahaha...wife is cookin sausage and eggs,,,gonna be using,,,your fabulous sause in a few minutes...woohoo...bob 2 Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159883 Share on other sites More sharing options...
h67mack Posted January 26, 2013 Share Posted January 26, 2013 Dear gentlemen this bring back a lot of memery's I ran a lot of R models back in the early 80"s mast were posative ground unit , I took the ash tray out and mounted a piece plywood over the top of the dash board . put my cb radio and an AM/ FM radio on this. Could hook is up in any unit I had to run, THe radio"s were insulatied from the thruck just grounded throw the antenna mount on the mirror bracket Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159916 Share on other sites More sharing options...
mowerman Posted January 27, 2013 Share Posted January 27, 2013 Dear gentlemen this bring back a lot of memery's I ran a lot of R models back in the early 80"s mast were posative ground unit , I took the ash tray out and mounted a piece plywood over the top of the dash board . put my cb radio and an AM/ FM radio on this. Could hook is up in any unit I had to run, THe radio"s were insulatied from the thruck just grounded throw the antenna mount on the mirror bracketthanks for your input,,,lets hope that helps him,,,,and tom,,i think what baby 39 was trying to explain was the (proper) way to do it,,,,and yes you will blow out your finals,,if you hook a CB up backwards,,,even with fuses in both leads,,,ive done it...bob Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-159949 Share on other sites More sharing options...
GearheadGrrrl Posted January 27, 2013 Share Posted January 27, 2013 lool...i know what you mean,,,niether did i ,,,, i hooked allotta them up in the 70,s,,,just like you said there,,,you see gearhead girls oppinion,,,wow good advice from a obambi lover.hahahahahahahahahahahahahahahaha...wife is cookin sausage and eggs,,,gonna be using,,,your fabulous sause in a few minutes...woohoo...bobMowerman, my condolences on your candidates loss. Now I suppose you're going to argue that negative ground in a muslim socialist conspiracy... Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-160180 Share on other sites More sharing options...
mowerman Posted January 28, 2013 Share Posted January 28, 2013 Mowerman, my condolences on your candidates loss. Now I suppose you're going to argue that negative ground in a muslim socialist conspiracy...no,,,but atleast you read my posts we do appreciate you inputs,,,,my complaint,,,isnt romney lost,,,my complaint is now we all lose,,,lets hope im wrong.bob 1 Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-160295 Share on other sites More sharing options...
GearheadGrrrl Posted January 29, 2013 Share Posted January 29, 2013 And if you don't like the current president/senator/congressman, in just a few years we get to pick another one. Ingenious system of government the founders designed with power spread over three diverse branches of government, isn't it? Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-160418 Share on other sites More sharing options...
41chevy Posted January 29, 2013 Share Posted January 29, 2013 And if you don't like the current president/senator/congressman, in just a few years we get to pick another one. Ingenious system of government the founders designed with power spread over three diverse branches of government, isn't it?So sorry, but in 3 years there will only be a single branch Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-160427 Share on other sites More sharing options...
JTFormula Posted January 29, 2013 Share Posted January 29, 2013 So sorry, but in 3 years there will only be a single branch The Socialist States of America Quote ~ JT Burkard ~ AKA Sweaty Mackwww.jtresto.com www.wickedreputation.netwww.jonathanthomasmotorcars.com Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-160469 Share on other sites More sharing options...
randyp Posted January 29, 2013 Share Posted January 29, 2013 I just lean my big head out the window and holler at everybody, nary a problem to date with that system, cepting maybe one maniac buzzard. randyp Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-160470 Share on other sites More sharing options...
mowerman Posted January 29, 2013 Share Posted January 29, 2013 And if you don't like the current president/senator/congressman, in just a few years we get to pick another one. Ingenious system of government the founders designed with power spread over three diverse branches of government, isn't it?thier all outa touch,,,we need to sweep the whole system...bob Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-160495 Share on other sites More sharing options...
GearheadGrrrl Posted January 29, 2013 Share Posted January 29, 2013 thier all outa touch,,,we need to sweep the whole system...bobSo you wanna go back to a monarchy? Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-160517 Share on other sites More sharing options...
markpwhit Posted January 29, 2013 Author Share Posted January 29, 2013 to all;thanks for all the great information. Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-160519 Share on other sites More sharing options...
randyp Posted January 29, 2013 Share Posted January 29, 2013 So you wanna go back to a monarchy?Who needs a monarchy when we got a dictator. randyp 1 Quote Link to comment https://www.bigmacktrucks.com/topic/29621-cb-radio-positive-ground-system/#findComment-160538 Share on other sites More sharing options...
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