Building a muscle car? The automotive wiring should be no problem unless you're planning to add some modern upgrades such as computer-controlled fuel injection, ignition, and timing controls. Then throw in a major-league sound system and install power windows and locks that weren't there before. And how about some LED lighting? And of course you have to have a security system. You can see how quickly you can run into the limitations of the factory automotive wiring. You end up having to piggyback new circuits into an automotive wiring system that wasn't designed for them or even overlay your own custom harness on top of the factory one. Things can get complicated and even heavy in a hurry. What's been needed for some time is a better mousetrap, so to speak. And that's exactly what the guys at Muscle Car Restorations found when they went looking for a wiring solution for their high-tech '69 Z/28 project. "We were looking to bring new-car electronic features such as theater-dimming interior lights, soft-start and delayed-shutoff headlights, express-down power windows, and LED taillights into a 40-year-old car," says John Balow, MCR's owner. "When Jay [Harris, President of Isis] demonstrated his multiplex system, we quickly realized that we could add any electronic feature we could think of." Isis Power At the heart of the Isis Power system is a completely new paradigm for automotive wiring, so for the moment at least, try to set aside your current understanding of what's involved when wiring any car. The brain of the Isis Power automotive wiring system is a completely solid-state unit known as the Mastercell. It accepts the actual On and Off switching of each electrical function and is fully programmable. It can receive input from as many as 50 different switches, sensors, and the like. The Mastercell in turn signals up to five Powercells that control the actual distribution of power. Each Powercell is a localized hub that can be placed in the car as needed. One in the front, somewhere in the engine compartment, and another hidden in the trunk will be adequate for most applications. Each Powercell is wired with two eight-gauge, 60-amp, fused leads from the battery and can supply power for up to 10 different functions. The obvious benefit of this arrangement is that the taillights, fuel pump, trunk popper, stereo amp, or whatever don't have to be wired all the way from the dash but only to the local Powercell in the trunk. There are no battery voltage leads connected to any of the switches. Mastercell current to each switch is less than 1 milliamp. With that little bit of power you couldn't start a fire under the dash if you tried. PARTS DESCRIPTION PN PRICE 3-cell starter kit ISIS3BOXZ- Isis $999.00 inLink RF control module ISISRDFMZ- Isis 179.00 inMotion motor controller ISISMRSCZ- Isis 369.00 Adding security to your car is seamless. The optional Isis inLink wireless system comes with a key fob for unlocking doors and popping the trunk of course, but it also has a security button that locks out the Mastercell from any of its normal commands. Once the Mastercell is locked, no amount of hot-wiring under the dash will make anything in the car work. Leads coming from the Powercells will also be dead. Essentially, you can effectively shut down the entire wiring system. Adding security to your car is seamless. The optional Isis inLink wireless system comes wi While Powercells are designed to turn things on and off, inMotion cells will control motors and solenoids for power windows, power locks, or anything else that requires polarity reversal for bidirectional operation. Each inMotion cell can control up to five motors or solenoids, so we only needed one to handle the four windows and door locks in this car. While Powercells are designed to turn things on and off, inMotion cells will control motor If you've ever been frustrated trying to track down a wiring problem, then you'll really appreciate that diagnostics are also integrated into the system. Throw any switch, and the Mastercell will give you confirmation on its LCD panel to isolate wiring problems. The Mastercell has a blinking LED light that tells you it is working properly and that its connections to the Powercells are functioning. In addition, the Powercell has an LED telling you which circuit has been turned on. If it's glowing brightly (or blinking if it's turn signal), everything is fine. If the LED is only glowing dimly, then you know that the issue is between the Powercell and whatever function you are trying to activate. If you've ever been frustrated trying to track down a wiring problem, then you'll really a The Isis system works equally well overlaid on top of your OEM wiring, so it's not necessary to remove your existing harness to take advantage of the Isis features to handle add-on components or functions. The Isis system works equally well overlaid on top of your OEM wiring, so it's not necessa Most cars will use Isis' three-cell starter kit, which includes one Mastercell and two Powercells. This car is also using an inMotion cell to control the power windows and locks. The Mastercell can control up to 50 different inputs. Each Powercell will supply power for up to 10 different functions. Most cars will use Isis' three-cell starter kit, which includes one Mastercell and two Pow All connectors are modern, OEM-style, Delphi, weather-resistant plugs. The plugs and all wires are automotive-environment and temperature rated. Using wire nuts and household wire from the hardware store to lengthen wire runs is a major no-no. Contact Isis if you need more wire. All connectors are modern, OEM-style, Delphi, weather-resistant plugs. The plugs and all w This Mastercell was mounted under the dash just to the left of the steering column. It's perfectly all right to hide it away, but it should be accessible enough so that the LCD screen can be seen to verify individual circuit, Mastercell, and Powercell functionality. This Mastercell was mounted under the dash just to the left of the steering column. It's p The Master and Powercells come preprogrammed with the most common system functions, and Isis provides several data sheets to show you which wires are for which functions. Additional or custom assignments are available from Isis or can be user programmed, so if you can imagine it, Isis can do it. The Master and Powercells come preprogrammed with the most common system functions, and Is While the Isis system can easily be added to any completed car, Jay Harris, Isis president (center) recommends mocking up the wiring while your car is still a shell when it might be easier to plan for cell placements. Also, rough wire length can be determined as well as which wires to bundle together, and individual wires can be labeled for their functions. While the Isis system can easily be added to any completed car, Jay Harris, Isis president SOURCES Muscle Car Restorations 11371 20th Ave. Chippewa Falls WI 54729 715-834-2223 www.musclecarrestorations.com ISIS Power Elk Grove Village IL 847-232-1991 www.isispower.com By Mark Ehlen Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!