ISIS Intelligent Multiplex System

[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.