Well i have looked for and can't find I know it's me but can some one tell me the color and where the wire is or how to? I have done the Exhaust brake mod Thanks Guy's 95 cclb 4x4 psd e40d

 

I think its the purple/pink wire in the harness in the back of the trans that you tap into. I'll look if you need me too.

 

I hope this helps you:

Torque Converter Lockup Switch and LED
The PCM controls the solenoid on the torque converter. When it is time for the TC to lockup, the PCM communicates to the solenoid to lock up the torque converter. Here are examples of LED’s that can be used without modification. These LED’s already have the resistor installed to accept 12Volts.

Locate the 12 pin oval-shaped connector on the passenger side of the transmission. It is connector C1048 and runs over the transmission to the driver’s side and up to the PCM. You are looking for the purple w/ yellow tracer (it might look like a blue with orange tracer. We have looked at SEVERAL trucks and they all look similar) wire coming out of pin 4 on the 12 pin connector. This is the wire that controls the lockup of the torque converter. Tap into this wire with a piece of 16-18 gauge wire and run into the cab through the firewall. Be sure to install a rubber grommet when routing wires through the firewall so the wire doesn’t rub through.


The switch can be installed without the LED indicator and the LED can be installed without the switch. Run a ground wire to one side of the switch and connect the other side of the switch to the wire you ran into the cab from the transmission. When the switch is flipped it will ground the signal from the transmission and lock up the torque converter. Connect a 12Volt wire to the hot side of the LED and connect the ground side of the LED to the wire you ran inside the cab from the transmission.

 

I was half right and half wrong! LOL Good post Jose!

 

Yeap. Half/half .. Thank you

 

I've heard of several of yall doing this. But what is the advantage to it?

 

I did one for a little extra breaking when downshifting.

 

This is one

If the intention is to use the EBPV as a brake with an Automatic Transmission equipped vehicle, then an additional circuit is required in order to reap the most engine braking benefit from this application. This circuit will keep the torque converter locked up while the valve is in an activated state. In effect, it maintains engine RPM in relation to ground speed and prevents transmission disconnection, which would result in loss of engine speed, ultimately reducing the effectiveness of the exhaust valve as an engine brake.

 

Thanks for the help

 

Didn't you just recently have a thread about it ? Didn't it end with you having to get a new trans ?

 

Leave it as it is , Ford knew what was best when they built the truck ...

 

I mentioned above how it can help in braking Rick but I only used it when a panic situation was developing. Then when in Michigan my TC quit locking all together so I started locking it with my switch. I did this for 2,500 miles and I believe that if I hadn't put the switch on, I would never have made it home. JM2cents. In other words, this was an exception to the rule.

 

So this is not something to do then? I have my ebpv on a switch and tow a 30 ft horse trailer loaded at about 16k lbs and would really like some slow down power that i can use and not destroy my truck

 

Brake pads are cheap ...

 

I wish I could tell you more Ben. I've liked having it but they say you wear out some of the disks or whatever their called. When my TC failed I'm sure glad I had it. I'm working a new pickup and don't know yet if I'm going to put one on.