3rd Gen Mystery Switch - DIY - Works great!

[cumminalong]

Originally Posted by ds33gt

What are the benefits of locking the converter, I thought it locks automatically?

I have an exhuast brake already on the truck, how does locking the converter help?

Used to driving a stick,never had to worry about this stuff..

Basically this mod allows you use your tranny as a stick.

The only time the TC locks normally is in 4th gear. In T/H mode, it will lock in 3rd.

This will allow you to pick a gear and lock the TC in 1st or 2nd.

It's a GREAT mod for exhaust brake use if yo udon't have one of the stand alone controllers.

__________________
'06 Ram 2500 CTD - 742 HP / 1456 TQ
Powered by: Doghouse Diesel Performance

[MrBen]

Ive read about it being necessary to jump two pins on a transmission relay underhood to prevent a CEL, any thought on this?

[cumminalong]

If you don't use the resistor, you need to pull the tranny relay (#59) on the earlier 3rd Gen trucks. If you use the resistor, you don't need to jump the relay.

You can install the switch without the resistor by jumping post 30 to 87 on that relay.

__________________
'06 Ram 2500 CTD - 742 HP / 1456 TQ
Powered by: Doghouse Diesel Performance

[MrBen]

two of my buddies, both with 04.5's, installed lockup switches as mentioned, without a resistor or jumping the relay. The same thing happens to both of them, it locked up the first time, then never again, and the truck ran like (limp mode?) but no CEL...?

[NOSPARK]

Great write up you can also do it another way by putting a diode one the ECM side of the TC lock up wire. just my .2cents. Other whys yep its that easy folks haha

__________________
04.5 2500 QC/SB 4x4 off-road package, SMARTY/FLEECE SUNCOAST BILLET/MAG-HYTEC/AFE/AEM/GUAGES/AD150/4" SILVERLINE/TOYOS/LEVELED/KVT-512 448/951

Originally Posted by loydmp

I ask crooked hat #1 to move so I could get out. He mean mugged me like he was tough and looked back at crooked hat #2, who proceeded to turn his Rap Crap up so he couldn't hear me. So I fired up Ole Lop Ear, stuck the stir stick to the far left, and started off the left floor button, and mixed it up with the far right one.

[Diesel_Nuts]

Nice write up bud!!

__________________
07 2500 Ostrich QC (E B P) 4x4, 5.9L, HTS, 8" Rize on 37s, Amsoil w/ BMK-11, Gauges, SMARTY, AEM B.F., BD Manifold, 5" MBRP, CFM+, FTE Rail Cap, WICKED CP3, Airdog, Mag Hytec's....Hard Parts Waiting to go in!!!!

[Twoforme2]

Originally Posted by smkstk

got one question for you, great install but why did you use a scotch lock under the truck(outside) and use heat shrink tubing inside the truck. sorry but i'm that guy that hates those dam things, i've found that using a butt connector with soe solder and the heat shrink tubing with glue works the best outside the cab. i'd do just the oppsite imo.

good install other wise!:thumbsup

I agree, I would NEVER leave something like that where moisture can get to it. VERY bad idea. If you had to use this type of connector there I would at least try to weatherproof it somehow.

Other than that, GREAT writeup with pictures...So easy a caveman can do it!

__________________
2007 2500 QC 4x4 5.9L

Just a wee bit more than a stock truck has!

[cumminalong]

Originally Posted by Twoforme2

I agree, I would NEVER leave something like that where moisture can get to it. VERY bad idea. If you had to use this type of connector there I would at least try to weatherproof it somehow.

Other than that, GREAT writeup with pictures...So easy a caveman can do it!

Okay........

After I installed the tap and connected the wire, I used the 1/2" shrink wrap on it and taped it over to weather proof it.

No, you not just want to leave it exposed.

__________________
'06 Ram 2500 CTD - 742 HP / 1456 TQ
Powered by: Doghouse Diesel Performance

[cumminalong]

Here's what the actual connection looks like. Underneath the tape is 1/2" heat shrink that goes over and around the t-tap.

__________________
'06 Ram 2500 CTD - 742 HP / 1456 TQ
Powered by: Doghouse Diesel Performance

---

Last edited by cumminalong : 12-29-2008 at 05:57 PM.

[wildcat]

Great job on the write up, and the execution of that modification! :thumbsup

__________________
Bill Mish
2007 Dodge 3500 4X4/5.9L/48RE, KORE, SRT-10 hood, Recon, Isspro, ICEBOX/Amsoil, Walbro, SMARTY, FBD CFM+, FBD HGD, FBD 5" exhaust. FBD TC & VB 458hp/1005tq
ACDC

[Smoke um up]

Definatly gonna try this sometime.

__________________
2006 Dodge 2500 with Cummins (of course!) , Quad LB, Banks Monster exhaust, MIA is the silencer ring and the kitty cat, Banks ram air, Edge juice w/attitude HOT, 2.5" levelers 18x9 Eagle Alloys 197 w/ 325/65/18 nitto terra graps

[5.9Gunner]

Great post, thanks for the pictures and details. I'm trying this today

__________________
'04 with some stuff