Reverse, park signals for Pioneer headunit in 2004 Dakota
Thread Starter
|
Registered User
Joined: Jul 2021
Posts: 15
Likes: 0
Reverse, park signals for Pioneer headunit in 2004 Dakota
I want to find a way to tap into reverse and park signals under the dash in my 2004 Dakota.
I removed the factory radio and put in a Sony AX1000 - huge mistake. By design, this particular Sony unit will never turn off. If Bluetooth is enabled, it's more promiscuous than an alley cat and attempts to bond with any BT device within 35 feet. Each time, the display turns on and runs through a 2 minute Sony video ad. If one makes the mistake of parking the truck in a high traffic area without starting it for a couple of days, the battery goes flat. There is no way to turn the unit off.
Now I have a Pioneer DMH-W4660NEX (similar to 4500 NEX in my Dodge Challenger and Alfa GT). The other two are manual transmission with signal wires for reverse and parking brake. The 4660NEX also has leads for reverse (violet/white), car speed signal (pink), and parking brake (light green) which do not have matching leads in the harness.
In the Challenger, there is a OBD-II connector to the iDataLink module to harvest car speed data. Since the Dak has no steering wheel audio controls, there's no iDataLink Maestro module. There's also no Canbus like in the Alfa. I don't care much about the car speed link. I want the reverse signal for a reverse camera. The parking brake signal is for unblocking features when "safe."
The parking brake signal is probably not necessary as I don't plan on watching any movies, etc., or I could set it to the foot brake, but this is an automatic. I'd rather this be tied to the transmission being in park. I read the instrument cluster section in the shop manual, and it looks like the gear selector indicator -- where I would otherwise get reverse and park -- receive the information from the Transmission Control Module over the Programmable Communications Interface data bus based on resistance values.
The same issue applies to the reverse signal - it comes from the TCM via the PCI data bus, so I don't see where I can grab a positive signal. In the wiring diagrams, I can't find anything I can harvest under the dash.
For the camera, I connected the power to the back-up light, but I haven't run it into the cab yet (long story). This was actually a bad decision. I'd rather power the camera from a fuse tap with constant power (when the ignition is on), that way I could manually turn on the camera for rear view even when not in reverse. That was much easier in the Challenger since the fuse block is in the trunk. That boat sailed anyway; I am not redoing that. I learned about it too late for the Alfa too.
If anyone knows of a wire or connection where l can tap a signal for "Park" or "Reverse" from the transmission, I'd be grateful for the information.
I removed the factory radio and put in a Sony AX1000 - huge mistake. By design, this particular Sony unit will never turn off. If Bluetooth is enabled, it's more promiscuous than an alley cat and attempts to bond with any BT device within 35 feet. Each time, the display turns on and runs through a 2 minute Sony video ad. If one makes the mistake of parking the truck in a high traffic area without starting it for a couple of days, the battery goes flat. There is no way to turn the unit off.
Now I have a Pioneer DMH-W4660NEX (similar to 4500 NEX in my Dodge Challenger and Alfa GT). The other two are manual transmission with signal wires for reverse and parking brake. The 4660NEX also has leads for reverse (violet/white), car speed signal (pink), and parking brake (light green) which do not have matching leads in the harness.
In the Challenger, there is a OBD-II connector to the iDataLink module to harvest car speed data. Since the Dak has no steering wheel audio controls, there's no iDataLink Maestro module. There's also no Canbus like in the Alfa. I don't care much about the car speed link. I want the reverse signal for a reverse camera. The parking brake signal is for unblocking features when "safe."
The parking brake signal is probably not necessary as I don't plan on watching any movies, etc., or I could set it to the foot brake, but this is an automatic. I'd rather this be tied to the transmission being in park. I read the instrument cluster section in the shop manual, and it looks like the gear selector indicator -- where I would otherwise get reverse and park -- receive the information from the Transmission Control Module over the Programmable Communications Interface data bus based on resistance values.
The same issue applies to the reverse signal - it comes from the TCM via the PCI data bus, so I don't see where I can grab a positive signal. In the wiring diagrams, I can't find anything I can harvest under the dash.
For the camera, I connected the power to the back-up light, but I haven't run it into the cab yet (long story). This was actually a bad decision. I'd rather power the camera from a fuse tap with constant power (when the ignition is on), that way I could manually turn on the camera for rear view even when not in reverse. That was much easier in the Challenger since the fuse block is in the trunk. That boat sailed anyway; I am not redoing that. I learned about it too late for the Alfa too.
If anyone knows of a wire or connection where l can tap a signal for "Park" or "Reverse" from the transmission, I'd be grateful for the information.
Thread Starter
|
Registered User
Joined: Jul 2021
Posts: 15
Likes: 0
It is the V6 3.7L. The transmission is, I believe, a 42 RLE...not sure on that. The transmission ID plate is on the top of the bell housing, which of course is excellent for protection, but not so excellent for viewing. Here is the data plate if anybody knows. Well, the system won't let me upload a pic.
After you mentioned that, I did look at the manual for the transmission. I'll have to look at the wiring diagrams. There is a solenoid on the transmission, which would not be easy to access. I think your idea is good though. That is probably where I need to look.
Cheers,
After you mentioned that, I did look at the manual for the transmission. I'll have to look at the wiring diagrams. There is a solenoid on the transmission, which would not be easy to access. I think your idea is good though. That is probably where I need to look.
Cheers,