[Paul Copioli]

Jason's equations should be used to check to see how much you will need your pump and if you need 1, 2, 3, or 4 accumulators (clippard tanks).

Now back to the original question. The double solenoid actually has two active solenoid coils (thus the word "double" in the name). What this means is that in order to make it work properly you need two commands: open and closed. A single relay can be used with one double solenoid if you add diodes to each leg of the relay. I have attached a picture from the 2005 guidelines document as I could not find it in any of the current documentation.

Now, you can connect a single solenoid and a double solenoid to the same relay, but why? The single solenoid will actuate when one of the double solenoids actuates so why not just conect a "T" fitting to one leg of the double solenoid to actuate your second device? We will be using this method this year on our shifters.

-Paul