Need help! Hooking up Dual Aftermarket Radio to 08 Tacoma

I need help /wiring diagram for OEM 2008 Tacoma Double Cab V6. I recently have been looking in these forums for guides. I have what I think to be every wire accounted for EXCEPT the OEM Brown/White Striped wire and the AFTERMARKET (Dual XDCPA73W Reciever) Reverse (+), Blue, Blue/White Stripe, and Pink wires. Does anyone know what the OEM brown/white striped wire is?

 

Does the Taco have OEM amplifier? I don't see any wire that is Brown with White stripe. Brown alone is ground.

 

https://www.tacomaworld.com/threads/got-a-wiring-question.135087/

 

I have seen this. Theres no brown /white stripe wire under OEM. That is what im missing. The aftermarket reverse (+) is purple/black stripe which says its a RR- speaker wire. How is that?

 

I have no idea. How could i find that out?

 

Not related, disregard.
The reverse input (+) is not part of the connectors to the OEM head unit. Especially on an '08. The wire you seek is red with white stripe. (reverse)

 

Also there was already an aftermarket radio in the truck prior to purchase. The OEM BROWN/WHITE STRIPE is connected to the AFTERMARKET RED/BLACK STRIPE and it did have an aftermarket backup camera . Could that be it? 5 wires total in one connector and 8 wires on the other connector.

 

I'd use a posi-tap instead of a 3m type tap. Prevent severing the wire.