Head Unit Wiring Problem??

[sug7]

up untill now i have had no problems with fitting car electronics's, i've fitted a few sub and amp setups for my self and mates and loads of head units and never had a problem,

however i have just bought a new saxo, and fitted my head unit, amp and sub, all was working ok apart from a bad earth which i fixed, now the problem i have is really annoying,

when i switch on the ignition my head unit doesnt come on automatically....?? and when i switch it on using the button on the head unit it doesnt remember any of the settings, its like it looses its memory when i switch off the ignition...?

can anyone help?

cheers

shane

[davidandrews5343]

swap the yellow and red wires around

[sug7]

yeah someone else mentioned this aswell, do i just take both cabled from the iso plug and switch them?

[SaxoKez]

yeah someone else mentioned this aswell, do i just take both cabled from the iso plug and switch them?

thats exactly what you do :)

[Claki]

just swap them over :y:

[sug7]

cheers mate, ill have a go later after work n let ya know if it fixes this

[SteveWC]

sug, had to do this on my headunit mate, really easy to do. let me know if you struggle :y:

[sug7]

sug, had to do this on my headunit mate, really easy to do. let me know if you struggle :y:

cheers mate, ill give it a try, u up2 much 2nyt?

might pop up man, show ya me new vtr :D

[Carlvtr88]

Make sure you disconnect the battery.. I know you may say, yeah obviously.. or - No i wont bother...
I had this problem and popped a fuse when changing them over.. just thought id mention it as it was a pain in the arse trying to fix one thing and causing ten other weird problems LOL.

[AdamH]

you do not need to disconect the battery, as you are swopping over the red and yellow wires of the headunit not on the loom theirfore just unplug the 2 iso connectors connecting that wiring to the car..

should already have bullet connectors on the loom (or you may need to cut if its a cheap lidl unit)

basically at the moment your ignition and perm live wires are the wrong way round so when the ignition is on the unit gets power, when you remove it the ignition supply is removed and the unit becomes powerless...

[lizza]

i had the same problem, i just swopped the yellow and the red and it works fine now. (apart from the sub & amp prob im now having but thats for another thread) x

[sug7]

cheers guys for the help, fixed this problem, took only about 3 mins to fix lol