Step by Step Scion HU t1819 HU install in LC Radio

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

Help!

I am attempting to install a Scion PT546-00160 in my son's 4th gen 4runner. I have all the recommended harnesses except for the bluetooth mic PT546-74120-MC. They appear to be discontinued at toyota and I can't find one on ebay or an aftermaket one. Is anyone aware of any aftermarket alternatives? I thought about buying a 8 pin male adapter and wiring it myself and I found this below, but I am not sure to figure out how the wires would go into the connector. Any suggestions would be really helpful. Thanks

8pin microphone connector (not sure about the pinout):
1 -> TSW-, connect to ground (6) to tell the radio that there is a mic / enable Bluetooth
2 -> MIC+
3 -> MCVD (+5V output to power the mic amplifier)
4 -> not used
5 -> MIC-
6 -> audio shield (ground) for pin 2+5
7 -> not used
8 -> not used
 

Users who are viewing this thread

Back
Top Bottom