Saga fan controller issue

[turtl631]

I have a Saga fan controller. It's run by the Saga water temp gauge. The controller is very simple, just 3 wires coming out of it plus a 2 wire harness to connect to the gauge. I'm running Altima fans. One of the fans is hooked up to the stock A/C fan plug and works fine, turning on around 205* or when the A/C is on. The other fan is permanently grounded, using 12V+ to turn it on. This worked fine with one of those crappy through-the-core $30 thermostatic fan controllers, but I wanted to have more controller and not rely on that stupid thermoswitch, so I installed this setup. The controller gets spliced between the fan and 12V+ according to the directions. However, when I made the second of these connections the fan immediately turned on. This was with the car off. Unplugging the controller from the gauge doesn't change the continuity between any of the wires, and my temps on the gauge are set high enough that it shouldn't be activating on a cold car anways. Am I missing something big here? Its just a stupid relay, why is it connected even with no trigger input?

[turtl631]

!Zar!, I saw you have one of these...any advice?

[g6civcx]

I don't know the pinout of the Saga fan controller and water temperature gauge. Can you post them?

I bet you mixed up a couple of wires, or you have a faulty fan controller.

[turtl631]

I'll scan and post it later, but its pretty simple. Basically, its a sealed square box (relay sized) with 3 large leads and 2 small ones that have a harness connector on them to connect to the gauge that controls the unit. The 3 main wires are for 12V+, the fan's 12V lead, and B (which I'm assuming is an A/C connection since it says to turn on the A/C to find this source on the car). The thing is, with the controller spliced between 12V+ and the fan, it always runs, even though the controller isn't even plugged in. What kind of relay is always tripped? There's no voltage across the trigger harness. Maybe that B wire is supposed to be used in some other way?

[g6civcx]

The scan will help.

It looks like 12+ goes to switched power source, fan lead goes to the fan obviously, and B goes to A/C on signal.

I would suspect faulty wiring (bad grounds, crossed wiring, etc.), faulty fan controller, faulty temperature gauge, faulty temperature sensor.

[turtl631]

Here's the instructions for the controller (not shown is the 2 wire harness leaving the controller that plugs into the gauge, which is what allows you to actually set the on/off temperatures: http://inlinethumb25.webshots.com/280/2496835210089794187S600x600Q85.jpg (http://good-times.webshots.com/photo/2496835210089794187yRVFBK)

I'm using the stock A/C setup on one of the Altima fans. The other of the pair is permanently grounded, and I spliced the yellow and orange wires from the controller between my 30A fused 12V power source and the 12V+ leads of the fan. It went on immediately, with or without the fan controller connected to the gauge. I did not have the coffee (wtf!? a little creative with the naming I see, I'm surprised yellow and orange weren't "lemon" and "tangerine") wire hooked up to anything, but grounding it did not change the continuity between orange and yellow.

[turtl631]

Figured it out, relay is tripped w/o signal, then when controller sends signal it disconnects. This required me to add a SPDT relay to the system to make it work-argh. It's a Honda OEM one I grabbed at a junkyard too, so now I have a Honda part on my car. Great.

Good fan controller for the money since for like $160 you get a warning/peak/replay water temp gauge with a stand along with a controller that allows you to set whatever on and off temps you want. It just requires a little too much creativity to wire up, and misses being the perfect because of that.