OEM stereo swap

I can't seem to find a wiring harness adapter that fits my '06 Tundra. I have an OEM CD/radio tuner that came with the truck, and I'm trying to swap it out with another OEM CD/cassette/radio tuner, but the pin on the truck wiring harness is weird. Can't seem to find a connector that matches. Any clue on what I'm missing here?

 

You didn't tell us what year your truck is, but I'm suspecting it's one of the earlier models and if you follow that harness down a ways, you'll find it's plugged into the factory amp in the dash. On the earlier trucks, the wire harness came up to the small amp in the dash, then a pigtail coming off the amp went into the radio.

 

PS - look at reply 47 and 48 here:
https://www.tundras.com/threads/project-double-gnar-adding-stereo-camera.96839/page-2#post-2486086

 

My '06 came with 6-disc non-premium (non-JBL). JBL amps and head units are labeled with the JBL logo, if this truck does have premium, it'd be clear looking at the face of the head unit.

There were at least 6 different radios for our trucks and several configurations which makes this stuff lots of fun. And the radios come with plugs in the back to suit those configs, either direct-wired speakers, or to accept the tee off an amp.

Earlier models with amp in the dash don't need an amp bypass harness. Later models where the amp is in the rear of the cab, either on rear wall (DC,RC?) or in the rear passenger seat cubby do require amp bypass.

Definitely not saying I'm right for OP's specific problem by any stretch, but based on the appearance of the connectors, I suspect OP may be driving an earlier model and the two harness ands you're seeing are coming from the dash amp. Only OP can confirm tho

 

I gave mine to another forum member in SoCal for the cost of shipping. He confirmed it was 6-disc when I asked him to test for any discs I'd left behind. Definitely didn't have JBL on it anywhere. Truck came with amp under rear cubby. That was made by Fujitsu, I think, definitely not JBL either. But looking up my VIN, Toyota says I have "Premium" audio. Super weird. Scion seems to use Pioneer for the non-JBL stuff, I think our FGT may have all Fujitsu hardware, I'd need to dig up pics.

From the Toyota VIN lookup for my truck (btw, I have leather captains chairs too, so ... something tells me their shit is broke on some stuff):

 

I think "premium" just means "amplified with amplifier" or "6 disc radio with amplifier". I've seen some showing "Premium JBL" in the features.

Like...

Standard (non-premium) = 1 disc with no amp, maybe 4 speakers.
Premium = 6 disc with non-JBL amp, 6 speakers.
Premium JBL = 6 disc JBL head with JBL amp, 6 speakers.

Edit: I have yet to see a later year'd truck with tweeters in the door and no amp.

 

$14 Metra 71-8113 Reverse Wiring Harness for Select 2000-2006 Toyota and Lexus Vehicles OEM Radio

Metra 71-8113 FTW

 

2006 DC

They are both single disc.

 

I love having a tape deck and a 6 CD Changer though I'm usually connected to BT. It's like it having the 3 ash trays in the double cab; they just don't make them like that anymore.
Sorry, I know this adds no value to the thread...