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Need a bit more info, is the sender your talking about a screen? or do you have a in dash dvd player that Your trying to hook up? The hook up is pretty straightforward, video cable from the camera goes to your video source, power is connected to your reverse light that you can find using a test light and putting the car in reverse with the key on and motor not running. and then a ground wire. if its a in dash dvd player you will need the switch wire connected to the reverse light as well so it knows to turn the video on to the feed from the camera. hope this helps.I have had much more luck on www.the12volt.com for car audio and video issues.
I'm assuming this is a DVD player or at least contains a video screen. The message you are seeing sounds like the rear camera input has been activated. They give this alert to inform drivers that the view through the rear cam may be reversed. Most cameras have a switch setting to allow this adjustment.
If you do not have a rear camera installed, then it sounds to me like the rear camera trigger has been improperly connected. This is a wire that when it sees a 12-volt signal, activate the rear cam input on the radio. If you do not have a rear camera, this wire should not be connected. You did not give a make/model so I cannot begin to guess the wire color, but look for a wire that is not either black, red, yellow, white, gray, green, violet, or blue (with or without stripes). There is no standard color for this wire. Some Alpine units use orange/white, but on most radios, this is a dimmer wire. Pioneer and Kenwood often use a light purple or purple/white.
Find out what wire is for reverse camera and disconnect it.
The parking brake (light green) connection needs to be connected to a (-) ground (black) wire, not a +12V wire. While it won't damage the unit to put +12V power to that wire, it does need to see a (-) chassis ground to view video while in motion. If changing this wire to ground still doesn't offer the solution, your Pioneer may require wiring of a relay as is necessary on several newer Pioneer navigation units. Some Pioneer radios will still not allow video to be viewed even if the parking brake wire is grounded. For these units, I recommend using a standard 12V automotive relay (Bosch type). I would recommend consulting a professional installer if you are unsure about wiring this relay. Otherwise, if you are comfortable/knowledgeable, the instructions for wiring the relay are as follows: 85 - chassis ground86 - Blue/white stripe (remote turn-on lead from Pioneer)87 - chassis ground30 - Light green (parking brake lead of Pioneer) The wiring of the relay will cause the parking brake lead to see the ground wire at the same time that the Pioneer actually powers up. This delay can be necessary for viewing video. An optional timing device can be wired in to do the same function such as PAC electronics' PTR-7. The message that you are receiving for "screen image may appear reversed" is typically only visible when a reverse camera is used. For this, the Pioneer has a separate purple/white stripe wire for +12V reverse input. I hope that this information was helpful.- Elliot
Here are some causes for this failure:
"E2"or "E3" (Without CD Changer)
1 Input Power to the RECEIVER UNIT (Trunk mounted) is missing, Check with volt meter to test for 12 volts 2 Fuse of the RECEIVER UNIT (Trunk mounted) is open, Replace it with 7.5 amp fuse. 3 The BUS CABLE (gray colored) that connects to HEAD UNIT(dash mounted) to the RECEIVER UNIT(trunk mounted) is not connected or is defective. 4 RECEIVER UNIT(trunk mounted) is defective.
Go through these and try your radio. Hope this works out for you.