ISIS One-Button Start and the Honda S2000 Switch...

Okay... this is a follow up to my last post on ISIS starting and security. Like I said in the last post, a lot of customers want a one-button function to start their project car that works like their daily driver. This function is completely integrated in the ISIS Intelligent Multiplex System.

Now, a lot of guys have asked specifically how to wire the Honda S2000 switch into the ISIS MASTERCELL. This is a popular switch because it is attractive, can fit into practically any dash design, it is cheap and it is easy to buy. Some of you may remember the Factory Five Roadster chassis that we had at SEMA in 2008 and the NSRA Nationals in Louisville last year. We wired this switch into this car.

We spent some time on-line over the past few days reading how guys have been trying to integrate this switch into existing cars, with some difficulty. As a result, we created a new application note showing you how to wire this switch into the inputs on the ISIS MASTERCELL to start the car.



Wiring this switch into a car demonstrates one of the big features of the MASTERCELL inputs. When you turn on an input, you are just sending a signal to the MASTERCELL to do its job. Less than 1 milliamp actually flows through he switch. That means that you can connect switches like the S2000 start button directly to the MASTETRCELL inputs with no need for relays. All of the wiring examples that we found on-line require relays to integrate this switch into a traditional harness.

In the case of the Cobra chassis that we had at SEMA, the owner wanted a military set of switches on the dash. He is a former Army helicopter pilot who flew Blackhawks in Desert Storm. He had wanted a toggle switch with a safety cover on it for the ignition. This switch was connected to the ignition input going to the MASTERCELL. Turning on this switch provided power to his MSD 6AL. The S2000 switch was connected to the starter input to the MASTERCELL. To start the car, he flips on the ignition toggle then presses the engine start button. To shut down the motor, he turns off the toggle switch. Pretty simple.

Likewise, you can use this switch with the ISIS One-Button Start personality just like I described in the last blog post.

You can find this application note and many more in our reference library at www.isispower.com. Click here to check it out.

Jay