MY INDASH WONT WORK WITH THE YELLOW TO THE YELLOW AND RED TO RED IT WILL ONLY COME ON WITH ALL 4 TWISTED TOGETHER WHEN I FIRST TESTED IT IT WORKED FINE HOOKED THE CORRECT WAY BUT NOW THE MEMORY AND SWITCHED POWER WIRES HAVE TO BE TOGETHER WHAT DID I DO TO CAUSE THIS HOW DO I CORRECT IT?
possibly blown radio fuse or accessory fuse, usually the red is the switched (accessory) lead and the yellow is the constant 12v. I would check your fuses in your fuse panel as well as any in line fuses on the yellow constant 12v as they usually have fuses. Does it work with the car off, keys out or is it when the car is on and they are all connected. Maybe your constant 12v is bad.