Relay for transbrke and nitrous

meat1037 · Member Joined: 24 Mar 2008 Posts: 36 1241.38 points

Hi! Could anyone tell me where i can buy a Bosch/Tyco 12v 30a single pole double throw relay for my nitrous and transbrake.Can i get them at AdvanceAuto Parts Store or Auto Zone and what will be the part #.

pro60chevy · Member Joined: 01 Jan 2004 Posts: 406 16.00 points

It should be available at most any auto parts store, I'm sorry, but I don't have a part number.

It's not a good idea to run a relay for the trans brake. It's not needed in that application, besides, it takes time for the relay to act, and that's not good for reaction times.

Paul P · Posted: Wed Mar 04, 2009 7:33 am Post subject:

I agree with Pro60 it is not needed. But here is where you can get them.

Digi-Key has a Tyco probably the same. $2.68+ship

http://parts.digikey.com/1/parts/752380-relay-auto-spdt-30a-12vdc-qc-1432785-1.html

Jad solutions has the exact one Bosch/Tyco for $3.88+ship

http://jadsolutions.stores.yahoo.net/12dcbo30spau.html

meat1037 · Member Joined: 24 Mar 2008 Posts: 36 1241.38 points

I see most people use them on there transbrake when they let the botten go the nitrous comes on

pro60chevy · Member Joined: 01 Jan 2004 Posts: 406 16.00 points

Two different things. What I meant was not to activate the transbrake on a relay, but absolutely use one for the nitrous system. I can't remember how it is wired, but I'm sure someone will have a diagram that will show how it's done.

meat1037 · Member Joined: 24 Mar 2008 Posts: 36 1241.38 points

does anyone have a diagram

MufflerBearings69 · Posted: Wed Mar 04, 2009 9:43 am Post subject:

I dont know where ya live, but most stereo shops buy from wholesalers who sell the 30amp and 40amp Tyco relays... I get mine from my stereo shop buddy when I need them.

Tyco relays have done well for me anyways...

clay · Posted: Wed Mar 04, 2009 12:57 pm Post subject:

We have used the NO contacts to run the transbrake and the NC contacts to run the nitrous system. The NC contacts are of course in series with a W.O.T. switch. When the brake button is depressed at wide open throttle, it activates the brake through the NO contacts but prevents the nitrous activation until the brake button is released. There could possibly be some reaction time delays with the relay activating the transbrake, but frankly, neither myself or my friends would ever know it. You could have the transbrake button activate the transbrake coil directly and still run the NOS through the relay like previously mentioned. Clay

meat1037 · Member Joined: 24 Mar 2008 Posts: 36 1241.38 points

CLAY do u have a diagram of how i should hook it up

clay · Posted: Wed Mar 04, 2009 2:50 pm Post subject:

This is the first diagram I found online. I don't have a scanner so I can't really draw anything for you. This one is sort of complicated as it has a lot of relays, but it will work. One thing I have to add is be sure to isolate your realy from vibration. Not as much of a problem on cars, but I have had a nitrous problem kick my a$$ on a motorcycle because of a relay getting vibrated in a certain rpm window and not letting the contacts stay closed. Clay
http://www.motorsportsdigest.com/tech/perform3.htm

pro60chevy · Member Joined: 01 Jan 2004 Posts: 406 16.00 points

Another simple way to do what you want to do is to put a window switch in there to keep the nitrous from activating under a certain RPM.

MufflerBearings69 · Posted: Wed Mar 04, 2009 3:29 pm Post subject:

If you cant find any local, I have been buying my wire and weatherpack connectors from this site and I can vouch they are good to deal with:

http://www.keefeperformance.com/site_map.html

He also has those relays

MufflerBearings69 · Posted: Wed Mar 04, 2009 4:10 pm Post subject:

Here is the info you wanted originally though:

I happened to have one in my toolbox Laughing

af2 · Posted: Wed Mar 04, 2009 7:15 pm Post subject:

Another thing I eliminated by installing a relay was the instantaneous cut out releasing the button when it was wired directly. Since then I wired through a relay and the problem stopped. I can let go at the first bulb and still have a .500! Laughing

Just kidding!

Paul P · Posted: Thu Mar 05, 2009 2:06 pm Post subject:

The easy solution not the cheapest is to get an rpm activated system like the ones from NOS,Jacobs,and others.

I don't hit the NOS much but I do have the Jacobs Mastermind for the system and it is a nice all in one solution.