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I am hooking a Kenwood KDC-9017 head unit up in my lunch trailer... the trailer only has a positive and negative wire in the trailer... which wires would i use to make the head unit function? The power in the trailer is either on or off by a main switch.
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Pull the radio out, tape off all wires but yellow, red and black. Twist red/ yellow together and attach to positive 12 volt, attach black wire to negative 12 volts. Turn on radio and see if it comes out of protect mode. If it does, you will have to troubleshoot all of the speaker wires to find a short.
normally negative. You can check by cutting the wires leaving them connected to the speaker and touching the wires to a nine volt battery. if you connect the negative terminal of the battery to the black/stripe wire and the positive to the other wire the speaker will either push out or pull in. if it pushes out then the battery will tell you the positive wire. if it pulls in the polarity is reversed and you need to reverse the wires. do not send the battery voltage back up to the headunit you will blow a channel in the radio.
red - positive switched
yellow - positive constant
black - ground
grey w/ black - right front negative
grey - right front positive
white w/ black - left front negative
white - left front positive
green w/ black - left rear negative
green - left rear positive
purple w/ black - right rear negative
purple - right rear positive
Please let me know if you have any questions, and thanks for using FixYa.
2001 Pontiac Grand Am Car Audio Wiring Diagram kenwood kdc-mp342u
Car Radio Battery Constant 12v+ Wire: Orange yellow
Car Radio Accessory Switched 12v+ Wire: none Run a wire to the fusebox for switched
power. red a 14 gauge wire will do--use a 15 amp fuse
Car Radio Ground Wire: Black/White black
Car Radio Illumination Wire: Gray (tape this wire off) none
Car Stereo Dimmer Wire: Brown (tape this wire off) none
Car Stereo Amp Trigger Wire: Pink blue
Left Front Speaker Positive Wire (+): Tan white
Left Front Speaker Negative Wire (-): Gray white/black
Right Front Speaker Positive Wire (+): Light Green gray
Right Front Speaker Negative Wire (-): Dark Green gray/black
Left Rear Speaker Positive Wire (+): Brown green
Left Rear Speaker Negative Wire (-): Yellow green/black
Right Rear Speaker Positive Wire (+): Dark Blue purple
Right Rear Speaker Negative Wire (-): Light Blue purple/black
Amplifier Mounted behind trim in the left side of the trunk.
The only wire that you should hook up from the amp to your head unit is the remote power wire which is the blue wire on the wiring harness for the head unit. Sometimes they are blue with a white stripe. Hope this helps.
The fact that your speakers have only one wire, indicates that they are the old negative ground type. You will have to buy new speakers, or try and connect the negative wires of your speaker wires from the radio to the car body (chassis) and try that. Normally you will get a bit of static when you start your engine
Check your wires to make sure they're not crossed. follow them all the way back to the radio if you have to. when it comes to subs, you have to get it right with how you connect your possitive and negative especially coming out of the amp. if you have rca's connected from the radio to the amp, then check the output to your subs from the amp to the subs, make sure theyre wired correctly. if you used your stereo wires for input to your amp, then make sure those wires are positive with positive and negative with negative. also make sure you have them hooked up to rear output only. don't use one rear and one front.
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