explicit wiring directions for stealth wire harness connections?

1st thing is, do you have JBL or base system?

 

there is a thread on here with parts and wiring diagrams needed to do the stealth install, and I think it also explains how to attach the 68 ohm resistor you need to solder into your adapter harness. also need a metra axxess if you want to use the steering wheel buttons. I bought a scosche adapter harness from ebay that came with the resistor already installed.

make sure all your crimps have good continuity, sometimes those cheesy butt connectors don't work too well.

 

In your first post you mention wiring directly to the Prius' wiring. This shouldn't be done; if you look up the directions in in Stealth install an aftermarket stereo in Prius | PriusChat , you need both a BHA-1761 and a BHO-1761. The wiring is simple - You pass the ACC, Battery +, and Ground to both the Prius headunit and your aftermarket. Then you disconnect all of the speaker wires from the Prius headunit and instead wire them to your aftermarket unit. Every other wire gets passed through and is connected to the Prius headunit (except maybe the antenna wire - this one I forget how I did, I think it just passes straight to the Prius headunit).

Think about using the BHA-1761 and BHO-1760 to wire every single wire though to the Prius headunit as if you weren't installing an aftermarket headunit at all. Then without disconnecting them, you tap the ACC, Battery +, and Ground wires to provide power to your aftermarket unit. Then you "cut" the wires from the Prius headunit that go to the speakers and instead connect them to your aftermarket unit, taping up the speaker connections on the Prius headunit to make sure they don't contact each other or ground. I forget what I did with the antenna wire, I'm sure details are in that thread.

Here's the wiring for the Prius' headunit (non-JBL). It looks like the ground wire is brown, the ACC wire is grey, and the battery wire is light blue (for the Prius' wiring - you shouldn't be tapping these wires at all, but instead tapping the wires on the adapters).


Finally, I agree with checking your connections. I personally don't crimp as I've had problems in the past - I solder and wrap every connection twice with electrical tape, then wrap the whole bundles with electric tape and zip tie them to ensure there's virtually no chance of anything coming loose.

 

Your adapter looks okay to me. Beware that sometimes wire colors aren't the same for the same connections (esp red, yellow, orange can all be Battery + or ACC +). I would confirm that these are correct. Next I would check the headunit. It could just be it's bad. If you provide it power to the correct wires from a 12V battery or 12V DC adapter, does it power up as expected? Other thing it could be is a bad wiring harness. You might check between the pins on each end of each connector with the continuity tester on a voltmeter.

 

excellent!