My recently purchased 94 SC300 speedometer wiring harness partially melted or was partially melted when I got it. Anyway, I'm having to replace the cluster and and need the wiring harness schematic so I can replace that too. Does anyone have a link to a good schematic/diagram. I've searched for a while and have not found anything as of yet. Any and all help would be greatly appreciated,

 

I have been having a similar problem and I've scoured the net for a instrument/combination panel wiring diagram. As it turns out I found the entire wiring manual but I think it's for a 92 sc400 (at least when I compare it to my 1uz harness it matches up). Unfortunately my panel is a digital Japanese (I'm in Australia) and I believe the diagram shows the plugs for a analogue panel.

Send me a PM with your email address and I can post through the PDF to you.