PAC TR-4 Remote Turn-on Module , Black

This was purchased due to researching the audio upgrade in a 2011 C6 Corvette with the Alpine iLX-W650 head unit. Due to the Vette parking brake on the operating performance on the Alpine iLX-W650 head unit, this chip will send a signal allowing head unit to work to its best performance without moving the park brake lever up and down numerous times. This was soldered into the Alpine iLX-W650 head unit harness and not on the Corvette parking brake wires. This is just to keep the issue pretty clear!!!

It states that the green wire should be attached to low voltage speaker wire, I hoped it would work to allow remote-on wire from aftermarket pioneer head unit to turn on multiple audio components. I hooked up to amplifiers (2), an electronic crossover, and 12 volt power block with digital voltage display to blue wire and it worked (so fare so good). I never knew that a remote out wire should really only be used for one remote-on audio comp. so this is new to me, glad I found it. I made a relay but felt it was a bit wonky and possible source of noise in system.

Nope! Did not solve turn on noise. Amps still powered on the second the power button was clicked and popped the speakers. Tried it on another amp, same result. Unplugged the power/ground from this unit and the amps didn't turn on, which was expected. Tried an external source for power, no change. Green and blue wires were wired correctly. Unlike other reviews, I don't care if this was easy to install/uninstall. I bought it for a purpose and it failed.

It tricks your stereo into thinking the park brake is on, so that you can unlock the features that require the parking brake to be on.

Used this when the amp wire wasn't working for my head-unit so that i could use another acc power. Works exactly as it should, my subwoofer doesn't pop when i turn on the truck. Note one thing for me: It does not reset instantly. So if you turn it on and turn the signal off and then back on again it quickly, it will not time delay. This is due to its design which is how any delay using a capacitor is going to work.

This shows up in the search results for a Parking Brake Bypass but the TR-4 is not the correct product for this. The PAC TR-1 is the parking brake bypass and Amazon stopped selling those.

First one I got was internally shorted. Didn't output any signal, and got very hot. Amazon sent me another one, new one works. At least for now. I put a fuse on every wire except ground, just in case. (2A fuses on the yellow and blue wires, 100mA fuse on the green wire). If it shorts out again I don't want it damaging my other devices.

Awesome in-line item to stop/prevent amp pop in an aftermarket stereo system This is now installed on my motorcycle with aftermarket amps/speakers which had that awful ramp pop! As soon as installed the amps turn on a full 2-3 seconds after the stereo preventing the POP Super happy to have gotten this item and put it inline.

Item as advertised

Lo usé para eliminar el parpadeo en la pantalla del coche, funcionó a la perfeccion.

Su funcionamiento no tiene queja. Solo podía conectarlo al negativo de la bocina de un canal trasero y es suficiente para que ponga en marcha el amplificador con 2 segundos de demora. Se supone que es 1 segundo pero el mio da 2. Solo se apaga cuando apago mi estereo (HU) o saco la llave del encendido. Gracias a esta cosa me ahorré cablear el encedido remoto y siento que hasta el ruido del alternador desapareción (a lo mejor solo me acostumbre). He notado que, aunque los productos de PAC son feos, realmente funcionan muy bien.