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I like those mini cats, where to buy thm? Yes, the Dakota one is $$$$. I did see one that uses the OBD2 and displays on an android app.

I also need some sort of Gear selector indicator light for my state inspection. They want to see what gear (P, N, D) its in when shifting. What are some options out there?

I am in MA, dont think I can use Ricks Muffler, I suppose they need the car there in order to make the exhaust. What are the mini cat's

Next on my to do list is the exhaust. What are you guys using for Cats converters, and tubing to make the exhaust?

Thank you all for all the help with this project.

Finally up and almost ready to test drive around once I get my driveshafts all figured out. The front seems to fit, the rear will need to be redone. I may have to use a front shaft and resize it for the rear.

I had it already wired the way i illustrated, and haven't touched it. It will stay like that if it's not wrong. Thank you for all your input on this, much appreciated.

What do you mean if it switches the other way? What other way? Are you still supporting the 0v, 12v on brake pressed theory, or is that out at the window?? The relay is wired in such a way that I get 12v with key on, and 0v when brake is pressed, which I though was the correct way on gen 3 ls...

what are you concluding here?

After digging more into this, I see why you believe that gm want to see 12v when brake pressed, 0v off brake. You are getting that from your diagram which is not giving you the full picture. Your gm wiring is showing just the brake Lamp switch which is indeed in the open position, but that has...

Interesting!! Though all gen 3 LS were wired that way with a closed switch that opens whn brake applies. Does it matter if it's a 4wd vs a 2wd?

You need 12v on key on, 0v when brake is pressed down. here is another clear image.

Looked at this again, and made some adjustment. Relay pin 85 to pin 6 on Brake lamp switch Relay pin 86 to ground Relay pin 87 to ground Relay pin 87A to 12v key hot Relay pin 30 to LS TCC wire. This will give 12v on key on, 0v brake pressed

Neutral Safety Switch. I need to wire the park/neutral safety which on my 4l60e. It came with this switch and the pigtail. Do we know how to wire this to the Jeep?

Where did you get that from? Pin C1:33 wants to see 12v all the time when the key is on, 0v when brake is pressed. No ??? Open circuit when Brake is Applied

I will search for the Gm circuit diagram for 04 Silverado. With the relay setup with the C3:24 wire, I get 12v on relay pin 30 when key is on, and drop when brake is pressed. I can hear the relay click, and voltage drop every time I press the brake. The relay is definitely switching. I can...

This is how I have the TCC relay hooked up. when testing, the ls tcc purple wire has 12v on key on, and drop when brake is pressed.

Ahh!! Yeah No, both of the drive shafts are dictonnected. Thanks. I will connect the front drive shaft and put it in 4x4 and test. With the TCC relay hooked up, should I be getting 12v whn key on, and no voltage when brake is pressed?? I have it connected and that's what's am getting. Thanks

Installed the winters shifter today, not a bad shifter. Am able to shift through all the gears. When the truck is running, gear in neutral, I hear a grinding noise if If try to shift in Park. The TCC is not yet installed, could that be the reason??

@glockman glock possible to get little more help on this, is the L50 wire on brake switch the correct wire to link to 85 on the relay? And once I get it all connected how to test that it's working? Thank you