2000 Toyota Echo Stock Radio

Does any one have a wiring diagram for the Stock Radio of a 2000 Toyota Echo? It has an AUX button on the front panel but no jack or plug-in for it and I'm curious if there is wiring included on the back panel or if it’s all just for show. The motivation here is to bring the Auxiliary input to a 1/8th inch jack on the front panel for external audio. I’ve already checked the Vehicle Wiring Database. No luck finding anything online yet so any help would be appreciated. Thanks.

you can use an adaptor like the ones available from USA Spec. They provide 2 RCA inputs on that factory aux channel. You can then use a 3.5mm to RCA adaptor to get the plug you want.Life moves pretty fast; if you don't stop and look around once in a while; you could miss it.