I need to identify speaker wires from hot and ground wires for a 1957 FoMoCo 12 volt radio [ Not installed.] There are two black wires on the left side of the case. One is soldered to a copper plate on the case, which also has a bare copper wire going to a copper coil.. The other goes to separate copper plate on the case, along with a wire to the on-off switch. These both appear to be grounded to the case.
In the back of the case is a fibre plate with two small holes for a plug-wire. The smaller [[green] wire goes to a larger copper coil which also goes to ground.. The larger hole goes to a ground on the case via a black wire.
I appreciate any help as I do not wish to blow anything out.
There are actually 4 wires on the right side 2 are speaker wires and the other 2 are the positive and negative connections . the black wire is positive supply and the green/red wire is negative earth . strange wiring !!
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need. goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
get i cheap test light there should be one with 12 volts all the time that should be the memory for radio then turn on ignition to find 12 volts for radio when ignition switch is on black is usually ground there might be a pink or purple or blue wire for power antenna if needed then trace speaker wires if yo dont know on new radio get a manual
OK, that radio use a straight or constant 12 volts a ignition 12 volts and grounds. now your radio ground might be connected to the park light wires of the car. that wire will should grounds ( - ) but when you turn on the park light it turns to 12 volts to illuminate the dashboard gear shift etc. if that is the case you're wondering where you will get grounds to collect the radio, well the antenna wire has ground, so plug and play, and the frame where the radio goes has metal, which is also grounds. disconnect the black wire from the radio and that wire you can test by turning the park lights on and you will get 12 volts
Does it light up? Does it have a mute button? Does it have a mute wire for in vehicle phone systems? If so, it may need to be grounded to take it out of mute, or it may need to go to 12 volts + It depends on how the circuit was designed.
If those check out, or it lights up but no muting make sure the speakers are connected to the correct wires. Also check to make sure the speakers are not grounded. Two wires should go to each speaker. you can check the condition of the speakers with a 9 volt battery touched across the leads, you will hear a pop sound. make sure those two wires for each speaker are connected to the radio correctly.
If it is a new radio first make sure your power wire is actually hot. Use a multi meter. Also you may have a blown fuse in the fuse panel. Check that. Make sure it is grounded as well. Improper ground will make it not power on as well. For this radio Blue = Remote that you run to your amp or power antenna. Insulate it if you are not using either. Black is Ground. Red = Your accessory wire and should only get 12 volts when the key is turned on (switched 12 volt source.) Yellow is your continuous power source. Hook this to your battery or other suitable continuous 12 volt power source. It also has a 5 amp fuse inline. Make sure it did not blow. Replace it to be absolutely sure. Use another 5 amp fuse. Never go higher. The other wires are for speaker hook up. If you do all this and still no power. You may have a faulty radio. Good luck.
1988 Ford F150 Truck Car Radio Wire Color Codes
Car Radio Battery Constant 12v+ Wire: Green/Yellow Car Radio Accessory Switched 12v+ Wire: Yellow/Black Car Radio Ground Wire: Red or Black Car Radio Illumination Wire: Blue/Red Car Stereo Dimmer Wire: N/A Car Stereo Antenna Trigger Wire: N/A Car Stereo Amp Trigger Wire: N/A Car Stereo Amplifier Location: N/A Car Audio Front Speakers Size: 6? Car Audio Front Speakers Location: Doors Left Front Speaker Positive Wire (+): Orange/Green Left Front Speaker Negative Wire (-): Black/White Right Front Speaker Positive Wire (+): White/Green Right Front Speaker Negative Wire (-): Black/White Car Audio Rear Speakers Size: 6? x 9? Car Audio Rear Speakers Location: Rear Corners Left Rear Speaker Positive Wire (+): Pink/Green Left Rear Speaker Negative Wire (-): Pink/Blue Right Rear Speaker Positive Wire (+): Pink/Blue Right Rear Speaker Negative Wire (-): Green/Orange
google_protectAndRun("ads_core.google_render_ad", google_handleError, google_render_ad);
Red is usually hot in 12 volt. Black in 110 volt. !2 volt tester is only about a buck at the dollar store. Turn ignition key to ON and test wire. The colors you test from present tape/radio should match the unit you are installing. If you still have doubts, buy a couple of 12v inline fuses and attach them to any wires you are playing with. They are cheap. Black is usually ground in 12v. Other colors usually relate to speakers.
iginition 12 volts red
constant 12 volts yellow
remote wire amp turn on blue/white stripe
Lfront + white
Lfront - white/black stripe
Rfront _gray/black stripe
Lrear -green/black stripe
Rrear + purple
Rrear - purple/black stripe
some radio have other wires too
like dimmer wire orange
power anntenna blue
and some flip screen radio have parking brake wire green
since your needing a wiring diagrame i would take it to a mecp professional 12 volt installer to install radio . about as fast as you blink your eyes you can fry the electrical system in your car and cost you 100's or 1000's of dollars buy and rewiring you car to fix it .
I'm assuming that this is a wooden or fiberglass hull (not a boat person). Ground for the radio needs to be either through the chassis (any existing screw or mounting stud on the radio will do) or via the manufacturers installed wire. That takes care of the NEGATIVE.
The Positive wire from the battery or from a switch must be attached to the correct input wire to properly power the radio, you can probably connect it to the memory (hold) input (which will drain your battery if left connected long enough) but that is not the best place.
Did this help? I am assuming that this is a new radio and you have the manufacturer supplied wiring diagram. If you do and my suggestion did not help, I could sure use a look at it to further advise you.
i supose the am fm radio just dosnt cut it anymore well lets give this a try . first u must disconnect positive battery cable so you dont short any wires . remove screws that hold in factory radio pull radio out a feww inches as no to rip out any wires.next you must locate positive 12 volt power supply wire usually red or orange .if not shure connect battry cable again and use a 12 volt test light by attaching the ground cable on the test light to a good clean metal bracket under dashboard or connect to a black groundwire with a screw into the steel under dash next probe the wires goin into the factory radio ur looking to find power 12 volts once you have found the correct power wire use tape and mark it this will be the power wire for your new stereo next u must figure out what wires for what speakers osually 2 wires per speaker 2 rear speakers and 2 front speakers meaning a total of 8 wires follw me so far ? now disconect car battry again so not to have sparks and cut or disconnect remaining wires speakers first label all with tape and mark front right front left rear left rear right there is a + and - the wire with the stripe on it is usually the + the other wire is the - being negitive ground . this operation is important in order for your fade ballance controlls to work properly now with your new cd player inhand look and see what wire is gonna be 12 volt most times its red with a fuse eg white plastic connector small fuse inside there it a must proper fuse to protect new cd player now there will be a black negative this will go to the matal ground area under dash close to where cd player goes into dash red to the orig taped 12 volt supply now ur spks one pos+ and one neg or common to each speaker now make all conections with stereo before you push stereo into dash you must hook up car battry leaving cd player hanging out so you can make wire changes if you wish on the speakers you need to use one pos front right or rear right + with one common or neg black - to the spkr the same common or ground or - whatever its called one common or neg can be used for all spkrs .good luck tape and solder all connections after you feel all is good im sorry this is all the help i can offer you be careful