Welcome, Guest. Please login or register.
October 19, 2018, 07:03:33 pm

Login with username, password and session length
Director PLEASE!!!!
Add your location information to your personal profile. Thanx!
435267 Posts in 37272 Topics by 9537 Members
Latest Member: Mgabski
Search: Advanced search
Advertiser Inquiries
+ My Community
|-+ General Tech
| |-+ Wiring - Basic and Advanced (Moderator: 347HO)
| | |-+ Wiring Diagrams: Relays and Switches
0 Members and 1 Guest are viewing this topic. « previous next »
Pages: [1] Go Down Print
Author Topic: Wiring Diagrams: Relays and Switches  (Read 5186 times)
juiced coupe
Six figures worth of don't give a f*ck
Global Moderator
Big Block
*****
Offline Offline

Posts: 8394


Location: Pascagoula, MS
The land mass between New Orleans and Mobile


« on: September 29, 2010, 09:51:56 pm »

It seems that I get wiring questions every couple days. Window switches, RPM switches, WOT switches, relays, you name it. I thought I would compile a list of instruction and reference links. Feel free to add to it or ask any questions.

Relays:

This place has diagrams for just about any relay application. From basic wiring to polarity conversion, even making a relay into a momentary switch. The sight is mostly audio and alarms, but a lot of basic wiring principles still apply.

http://www.the12volt.com/relays/relays.asp

Here is the basic relay instructions from MSD. They are a little easier to read than some of the above information. These will take care of 90% of applications.

http://www.msdignition.com/uploadedFiles/MSDIgnitioncom/Products/Tools/8961_instructions.pdf

RPM and Window switches:

These are the instructions for MSD's RPM and Window switches. They are straight forward and easy to follow.

http://www.msdignition.com/uploadedfiles/MSDIgnitioncom/Products/RPM_Timing_Controls/8950_instructions.pdf

http://www.msdignition.com/uploadedfiles/MSDIgnitioncom/Products/RPM_Timing_Controls/8956_instructions.pdf

WOT switches:

While WOT switches can be wired into either side of the circuit, I prefer to use the relay's negative trigger. In these diagrams, you can see the micro switch on the negative side. It simplifies wiring (if using a simple ground) and reduces the chance of a spark near the carb. If using a RPM or Window switch, the yellow wire can be routed to the micro switch, and then to the relay's negative trigger.

http://www.barrygrant.com/nitrous/default.aspx?page=113

Note: The above diagrams show the use of Hobbs (safety) switches. Many industry experts advise not to use them. They are known to cause erratic behavior with system activation.
Logged

Doing more with less, or something like that.
http://sbftech.com/index.php/topic,20009.0.html

Quote from: Monte Smith
Bottom line, if it was the hot ticket, the fast guys would do it.............they don't

You might need some Titanium rods and a flow bench!  LMAO on floor

I honestly don't get it.

I'm sweating, my heart is racing, my clutch foot is twichin', and my right arm punched the computer screen doing an involentary 2-3 shift while reading all that. 
juiced coupe
Six figures worth of don't give a f*ck
Global Moderator
Big Block
*****
Offline Offline

Posts: 8394


Location: Pascagoula, MS
The land mass between New Orleans and Mobile


« Reply #1 on: September 29, 2010, 10:05:05 pm »

Here are some more. About 3/4 of the way down, there is a nice diagram for wiring a trans brake, 2 step, and nitrous together. Even though all these show the WOT on the positive side, I still prefer the negative for safety reasons.

http://sbftech.com/index.php/topic,1754.0.html
Logged

Doing more with less, or something like that.
http://sbftech.com/index.php/topic,20009.0.html

Quote from: Monte Smith
Bottom line, if it was the hot ticket, the fast guys would do it.............they don't

You might need some Titanium rods and a flow bench!  LMAO on floor

I honestly don't get it.

I'm sweating, my heart is racing, my clutch foot is twichin', and my right arm punched the computer screen doing an involentary 2-3 shift while reading all that. 
Pages: [1] Go Up Print 
« previous next »
Jump to:  



Powered by MySQL Powered by PHP Valid XHTML 1.0! Valid CSS!
Powered by SMF 1.1.21 | SMF © 2015, Simple Machines



408 Stroker