Head Unit Losing Memory

[viper8]

installed double din head unit in my lexus .but it is losing memory when i switch of ignition .which wires are wrong way round guys ? got to remove this today to do the aerial wire so i can do this also ....

[Rob]

it obviously doesnt have a permanant live feed - look 4 a wire that does when ign is off and thats the one to use

[viper8]

yes all the correct wires ( red and yellow Battery wires ) all connected .thats what i cant understand...

[viper8]

still not got the head unit to keep memory .changed yellow and red wires around today but still no difference .has anybody got any ideas ?

[sparkystav]

^^^^^^^^Thats what i would have suggested.

Is there an ISO lead for the GS or just tapping in using wiring diagrams?

[viper8]

just tapping into the wiring ,thing is i had another aftermarket unit in there before .and that was ok .and i dont suspect this new one i have got .i have found that if you switch the ignition off for about 5 mins it keeps memory .if its off for about 20 mins it loses it .......strange

[sparkystav]

Is it a cheap eBay double din?

If so my old one used to do that, you need to turn the key to the first notch for a few seconds, then start the car. It seems to be the sudden on-off-on when you start the car it doesnt like.

[viper8]

i will try that tomorrow .see what happens ...