Hi,

I'm in the process of choosing dual electric fans and saw something interesting at the Derale website. The instructions for one of the dual shrouded fans (in this case 16833) says the following:

WIRING OPTIONS
IMPORTANT: Due to the high amperage of each individual RAD fan on the Dual RAD Fan Assembly, each fan MUST be switched*
individually. Failure to use two different switching devices could cause damage to your vehicle and/or your new Electric Fan Assembly.
* Switched - Utilizing an automotive rated thermostat or manual switch
There are a few options on how to activate (turn on) your new Electric Fan Assembly.
1. Manual Switch - Install a switch in the passenger compartment and turn on Electric Fan as desired.
2. Electric Fan Thermostat Switch
A. Adjustable Thermostat - Allows an adjustment range for you to determine optimal turn on temperature.
B. Pre Determined Temperature - Thermostat has a pre determined temp. from the factory that determines turn on temp.
We recommend using two thermostats to activate Fan #1 at an earlier temperature than Fan #2. This will help spread the major
amp draw on your vehicles electrical system. Please visit www.derale.com for available thermostat options or visit your local
retailer.
Important: When purchasing a thermostat always consider the maximum amp draw. Some thermostats are not designed to
properly handle 25 amps.
Note: When installing the Electric Fan with a Thermostat always follow manufacturer's instructions for specific details.


What caught my eye was the instruction (highlighted in blue font) to activate the fans individually to spread the amp draw. Has anyone wired their fans like this? What temperature settings are you using for each fan?

Thanks