Hi Mark, Just to add to Chris's response, modern cars have factory stereos which change their illumination when you turn your headlights on - to know the lights are on they need a signal from the illumination circuit. Hence when you replace the head unit you have this 'extra' wire that doesnt seem to do much so it is assumed to be extraneous, or hooked up to the wrong thing etc, resulting in fuses blowign etc. this wire from the illumination circuit is generally simply 0V that goes to +12V when you turn your headlights on. Hope this explains why the illumination circuit has to do with a stereo a bit better.
Andrew On Mon, 20 Jan 2003, Mark Firman wrote: > Hi all, > Can anybody who knows a bit about mobile electronics explain to me the > concept of the illumination circuit (i.e. dash lights etc) and how it > works, and also why it has anything to do with a car's stereo ... Any > explanation, complex or simple, would be a great help! > Cheers, > Mark Firman > > _____________________________________________________________ > Get Your free Ozdat Email Account > ---> http://www.ozdat.com > > _____________________________________________________________ > Select your own custom email address for FREE! Get [EMAIL PROTECTED] w/No Ads, 6MB, >POP & more! http://www.everyone.net/selectmail?campaign=tag > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
