ISIS Intelligent Multiplex System

[deuce_454]

i dont get it!

i mean will it do away with all the relays.. what about turnsignals.. do you program the frequency? hi lo beams etc??

[jonfarrugia]

Originally Posted by deuce_454

i dont get it!

i mean will it do away with all the relays.. what about turnsignals.. do you program the frequency? hi lo beams etc??

Yes, it will do away with the relays. Each output is capable of handling 20 amps. so you could run your high beams directly from the power cell. A cool feature is that you can pulse the outputs at a high speed which will dim your headlights. So you could run your headlights with full power at night and then run them at half power during the day as day time running lights! You could conect any light, like your interior lights, and control the intensity. As you leave your car the interior lights could stay on for 60 seconds and then slowly go dim. The possiblities are endless!

All your turn signal flashing can be programmed through the system too. Hi beams...Low beams... flash frequency...it does it all.

[deuce_454]

Originally Posted by jonfarrugia

Yes, it will do away with the relays. Each output is capable of handling 20 amps. so you could run your high beams directly from the power cell. A cool feature is that you can pulse the outputs at a high speed which will dim your headlights. So you could run your headlights with full power at night and then run them at full power during the day as day time running lights! You could conect any light, like your interior lights, and control the intensity. As you leave you car the interior lights could stay on for 60 seconds and then slowly do dim. The possiblities are endless!

All you turn signal flashing can be programmed through the system too. Hi beams...Low beams... flash frequency...its does it.

[HOMER SPIMPSON] Mmmmm I want one... [/HOMER SPIMPSON]

[CreepinDeth]

Originally Posted by jonfarrugia

Yes, it will do away with the relays. Each output is capable of handling 20 amps.

So what about electric fans that require more then 20amps on startup ??
Will this blow a circuit on the powercells ??

$5 relay VS $350 powercell.....hmmm....
I think I like the complete American Autowire options for $400 myself.

[James OLC]

Originally Posted by CreepinDeth

So what about electric fans that require more then 20amps on startup ??
Will this blow a circuit on the powercells ??

No problem - the ISIS programming lets you use a soft start for fans and headlights. Coupled with the ability to vary the output its a great feature that you can't get with an off the shelf system.

We're going to try to see if we can come up with a suitable program to control the wiper motor... multi-speed wipers without a multispeed box...

[deuce_454]

Originally Posted by James OLC

No problem - the ISIS programming lets you use a soft start for fans and headlights. Coupled with the ability to vary the output its a great feature that you can't get with an off the shelf system.

We're going to try to see if we can come up with a suitable program to control the wiper motor... multi-speed wipers without a multispeed box...

THAT is a nice feature..
i have a question, if th eengine has dual fan controll built in to the ecu... do i connect the fan enable (wich is pull to ground) to the ISIS and program 2 outputs, one for each of the fan motors?

[James OLC]

Originally Posted by deuce_454

THAT is a nice feature..
i have a question, if th eengine has dual fan controll built in to the ecu... do i connect the fan enable (wich is pull to ground) to the ISIS and program 2 outputs, one for each of the fan motors?

That is the way that I wired mine. You don't neccessarily have too but the biggest benefit of running it through the ISIS MasterCell is that you can add additional triggers/controls for each fan. For instance, you can have each fan temperature controlled by the ECU, then you could have a second trigger for the second fan running from the AC and you could have a second trigger for the first fan as a manual switch in case you want to override the ECU or run the fan when the car is off. Likewise, you could add an override switch to shut the fan off regardless of what the ECU is telling you - for instance if you are racing the car (and don't want the draw) or if you want to control/override the fan based on speed or RPM.

The great flexibility that ISIS gives you is that you can have IF - THEN programming regardless of what the base system wants to do. For instance, most of the new OEM cars shut the electic fan off over 35 mph (or something) since the electric fan isn't doing anything useful at speed anyways. You can, with a little bit of thought, program your EFI engined swapped or even carbed setup to do the same.

[DOOM]

This is the only way to go! Great system great support! Jay's a great guy to talk to...

[CreepinDeth]

Originally Posted by James OLC

No problem - the ISIS programming lets you use a soft start for fans and headlights. Coupled with the ability to vary the output its a great feature that you can't get with an off the shelf system.

We're going to try to see if we can come up with a suitable program to control the wiper motor... multi-speed wipers without a multispeed box...

So basically you don't need to get something like a SPAL PWM controller then.
Interesting.....does the standard 3 piece kit (1 Mastercell and 2 Powercells) for $999 handle this ??
Or is there something else you have to purchase in addition to get that functionality ??

The Wiper motor pulsing too ?? Now that's cool.

[James OLC]

Originally Posted by CreepinDeth

So basically you don't need to get something like a SPAL PWM controller then.
Interesting.....does the standard 3 piece kit (1 Mastercell and 2 Powercells) for $999 handle this ??
Or is there something else you have to purchase in addition to get that functionality ??

The Wiper motor pulsing too ?? Now that's cool.

Standard 2 PowerCell kit does it no problem, assuming you have a trigger signal for the fan (thermostat or ECM). You can go one further with the idea as well - you can have a manual fan swtich that you could leave on all them time (if you wanted) and program the MasterCell to (a) allow the ECM to override the manual switch if the car is running (ie. engine running - fan is controlled by the ECM - off and on) and then (b) rely on the switch (off - on) if the engine is not running and (c) if it's on, keep the fan running for 5 minutes and 15 seconds (or whatever you want) after the engine is shut off. I'm not positive but I think that with the new systems, it might be possible to program in a safety shutoff if the voltage drops to a dangerously low level as well.

You can do something similar with the interior lights - (a) interior light switch overrides all other (ie doors) for off and on and (b) if door opens, interior lights come on gradually from off to full on in 2 seconds and (c) when door closes interior lights shut off in 15 seconds and in the last 2 seconds gradually go from full intensity to off unless (d) the engine is running in which case they fade off with no delay but (e) if one or both of the doors is open for more than 5 minutes the lights automatically shut off unless (f) the engine is running or (g) the switch is on.

All this is easily doable with the standard 2 PowerCell kit (which gives you 20 switchable outputs). I only have a 2 PowerCell kit in the '67 and still have 3 available outputs so anyone who thinks they need 3 PowerCells (30 switchable outputs total) is not doing anything even remotely close to a "basic" installation.