staged nitrous control

Printed From: the12volt.com
Forum Name: Motorcycle Electronics
Forum Discription: Installing Stereos, Alarms, Remote Starters, Lights, Garage Door Openers and other electronics on motorcycles.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=96681
Printed Date: May 04, 2025 at 11:35 PM

Topic: staged nitrous control

Posted By: sportbikeryder
Subject: staged nitrous control
Date Posted: August 27, 2007 at 12:51 PM

Hello,

I am trying to hook up a three stage nitrous system on a motorcycle. I have three switched grounds corresponding to three different gears. I want to run one nitrous solenoid (A) in first, a second nitrous solenoid (B) in second, and both solenoids (A and B) in third, through relays to reduce current draw on switches. I think I need the diodes per the attached picture to prevent both solenoids from activating in each gear. I have tried a search but didn't find anything related. Can someone confirm, correct, or add to my schematic?

Thanks,

John8D

Switch 1 = A energized

Switch 2 = B energized

Switch 3 = A + B energized

posted_image

Replies:

Posted By: i am an idiot
Date Posted: August 27, 2007 at 1:41 PM

The way you have it drawn this is what you have.

Switch 1 = A energized. Switch 3 = B energized. Switch 2 = A and B both energized.

We don't want you to flip the bike when shifting into 2nd gear.

Posted By: sportbikeryder
Date Posted: August 27, 2007 at 2:24 PM

Oops. Actually, I had it the other way (Labeled 1,3,2 across the top) in my preliminary sketch and that was the intent. I mostly just wanted to have another check on the diode orientation to be sure I am able to isolate A and B individually and eliminate back feeding the relay.

Thanks for the catch on the switches.

John

Posted By: i am an idiot
Date Posted: August 27, 2007 at 4:12 PM

Your diodes are properly located and are in the right direction.