Connections The wiring harnesses on all the controllers look like a bed of snakes due to all the options that must be accommodated. But if all you are looking for is a basic system, making the connections to make the trans work is pretty simple. There are only three connectors that need to be attached to the transmission: the main harness connector, a transmission input shaft sensor (TISS), and the transmission output sensor (TOSS). The Painless Torc abbreviates that even further by only using the TISS connection. The remaining connections generally involve a constant 12-volt source, a switched 12-volt source, a good ground tied directly to the battery, and an rpm signal. The Torc system is simpler, as it does not require the rpm trigger or the constant 12-volt source. During our testing, we set the car up for quick-change electrical connections and had each box running in less than half an hour. Of course, we cheated and didn't mount any of the boxes in the car. It appears the hardest part of the entire installation would be routing the wires and mounting the box in a professional manner.    Making connections to the transmission couldn't be easier. The small, two-wire TISS connector is at the front (arrow 1), with the large 14-pin fitting in the center (arrow 2) and the TOSS connection at the rear of 4L80E trans (arrow 3).    Making connections to the transmission couldn't be easier. The small, two-wire We also mocked up this AccuLink TPS adapter from CompuShift and found it to be very compact, simple to install, and just plain slick in operation. The AccuLink will fit a Holley, Edelbrock, AFB, or Q-jet carb. We initially used the TCI TPS adapter, but we really like the AccuLink for its simplicity. Unfortunately, the AccuLink is only available for CompuShift users. We also mocked up this AccuLink TPS adapter from CompuShift and found it to be very compac Application Chart Controller GM Transmissions Ford Transmissions 4L60E/4L65E AODE/4R70W 4L80E/4L85E E4OD/4R100 HGM CompuShift II YES YES GM CMPP Supermatic YES NO Painless Torc YES YES PCS Simple Shift YES YES TCI EZ-TCU YES YES The following is a list of the popular electronic overdrive transmissions. Not all of these controllers will work with these transmissions. Overdrive Automatic Transmissions Transmissions Gear ratios First Second Third Fourth GM 4L60E/4L65E 3.06 1.63 1.00 0.70 GM 4L80E/4L85E 2.48 1.48 1.00 0.75 Ford AOD-E 2.40 1.47 1.00 0.67 Ford 4R70W 2.84 1.55 1.00 0.69 Mopar 40RE/42RE/44RE 2.74 1.54 1.00 0.69 Mopar 46RE/47RE/48RE 2.45 1.45 1.00 0.69 « | 1 | 2 | 3 | 4 | 5 | 6 | View Full Article By Jeff Smith Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!