youngteam

Sorry for all the questions, :-) but where did you earth your amp? I can't seem to find an earth that doesn't end up with alternator whine and I don't want to have to drill any holes if there's something else I can use. I've tried the factory earthing point, CD changer bracket and rear lights.

Perfect, just what I needed to know :-) Thanks

Sounds good, any more info? The first thing I'm not sure about is getting the door cards off, but if you have any more details on how you mounted the speakers etc that'd be great.

Cheers for that, although it's a bit too late now as I've modified all the wiring to fit a new amp. Has anyone modified the front doors to take 6.5" speakers?

Wiring Colours: Headunit outputs (white plug): FL+ Red/Silver FL- Dark green/silver FLG Brown/Silver FR+ Black/silver FR- White/Silver FRG Brown/Black/Silver RR+ Purple/Silver RR- Light Green/Silver RRG Brown/White/Silver RL+ Pink/Silver RL- Blue/Silver RLG - Brown/Yellow/Silver Speakers (Orange Plug): RR+ Red RR- White RL+ Black RL- Yellow FR+ Light Green/Silver FR- Blue/Silver FL+ Pink/silver FL- Purple/Silver WF+ Light green/black/silver WF- Light green/brown/silver Power (blue plug): Not done the colour scheme for this, but will do so tomorrow however I can tell you that this provides a permanent 12V, ACC, Remote and ground. 2 pins are actually marked GND one is an actual ground and one I'm not sure about (maybe headunit ground??) I hope this helps someone, but of course I would check these out before using them. They are however correct for my 96 GS300 with the "Premium" audio

I just got a cheapy kenwood kfc-w2509, mainly because it was available for £10 (~£55 rrp) and I'm a little short of cash having just bought the car, but hopefully it'll be ok. I was hoping I could get away without removing the whole rear seat, but looks like I'll have to take it out :-( Looks easy enough though.

Well, I've given up on the Lexus amp as it's far too knackered, expensive and difficult to source, so I've begun work on converting the wiring to allow the standard head unit to interface with a generic amp. I've completed most of the job and now have the amp (a 6 channel infinity) all wired up using the existing speaker wiring and head unit outputs but obviously with a beefier power and earth cable. All is set up and working plus I haven't lost any of the functionality of the standard headunit. The only problem I'm having at the moment is alternator whine which I hope to sort out over the next few days, and that my rear drivers side speaker doesn't work so needs investigation (any ideas for replacements?). I've worked out the pinout and colour schemes of the amp wring and will post them here if anyone is interested. I do have another question though. The inifnity amp won't run bridged with a 2ohm load so I've purchased a replacement 4ohm free air subwoofer for the rear shelf, but can't quite work out how to get at the old one. So before I start randomly pulling on things, does anyone know how to do it?

True, but worth a go before shelling out loads of cash on repair/replacement I think. My dad (ceegeepee - above) was an electronics engineer years ago so I trust him to have a good go at fixing it before I give up.

Cheers for that :-) I've got the amp out and we've had a good look at it. It seems to have water damage so we're going to have a go at cleaning it up and see what happens.

I would if it was covered by their warranty. Perhaps I'll just get you to fix it....

Oh yeah, never thought of that, well at least I find out before wasting any money. Sure I can't tempt you? :D Guess I'll have to try and get it fixed then. I've tried a couple of places but they refuse to fix Lexus stereo's for some reason. I've emailed autosound to see whether they can fix it but that'll mean being without any sounds for a week or so :-( Perhaps someone out there will sell me one though (here's hoping)

So none of you guys who've replaced your standard kit want to sell me your old amp?

I found one in the US but they'll ship to the UK http://www.autotoys.com/x/cust/product.php?productid=2462

For the time being I might just cope with only having the left channel :-( I've had one quote of around £250 for a used one that seems OTT. Is there a fascia adapter for the GS300 that would let me use a standard single DIN headunit so I could replace the entire standard system?

I've just discovered that the amp in my new (to me at least) MK1 GS300 is broken so need to get hold of a new one ASAP. Does anyone have a working one they want to get rid of? Or know where I can get one before the weekend? (Sorry for posting this twice, but thought I might get a better response in here)