Help with HARLAN 2 step and trans brake application
Thread Starter
TECH Addict
iTrader: (9)
Joined: Nov 2001
Posts: 2,652
Likes: 1
From: Western Pennsylvania
Help with HARLAN 2 step and trans brake application I read the directions for the 2 step and I understand how it works except for the relay the directions talk about. Is this relay internal in the black box? Do I need to buy a relay? It says this about the relay:
In both configurations the relay will close whenever the 2 step is armed. This will connect the terminals 87 and 30. When the 2 step is not armed 87A and 30 are being connected. Use 87 and 30 for an "armed indicater" and use 87A and 30 for a nitrous "de-activate switch". I am really confused.
I am not using nitrous
Here is what I understand. Connect the yellow wire to "positive" connect the grey wire to a continuous ground. Connect the white wire to a momentary switch then to ground. This is what activates the 2 step.
TRANS BRAKE: Only 2 wires to mess with. The way the wiring is set up now the black wire is connected to ground. The white wire I simply connect to a momentary switch and then to "positive connection". Can I do this *** backwards and connect the "positive connection" direct and use the momentary switch in the ground wire to complete the circuit?
I ask this because:
Could I use the same momentary switch for both the 2 step and the trans brake ground wires to complete both circuits? If I can, I understand how I can hook this thing up.
What the heck is the relay??????
Thanks for any help because I want to hook this thing up tomorrow.
TIA Tom
PS, I'm NO ELECTRICIAN <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
<small>[ February 16, 2003, 07:08 PM: Message edited by: Tom the roofer ]</small>
In both configurations the relay will close whenever the 2 step is armed. This will connect the terminals 87 and 30. When the 2 step is not armed 87A and 30 are being connected. Use 87 and 30 for an "armed indicater" and use 87A and 30 for a nitrous "de-activate switch". I am really confused.
I am not using nitrous
Here is what I understand. Connect the yellow wire to "positive" connect the grey wire to a continuous ground. Connect the white wire to a momentary switch then to ground. This is what activates the 2 step.
TRANS BRAKE: Only 2 wires to mess with. The way the wiring is set up now the black wire is connected to ground. The white wire I simply connect to a momentary switch and then to "positive connection". Can I do this *** backwards and connect the "positive connection" direct and use the momentary switch in the ground wire to complete the circuit?
I ask this because:
Could I use the same momentary switch for both the 2 step and the trans brake ground wires to complete both circuits? If I can, I understand how I can hook this thing up.
What the heck is the relay??????
Thanks for any help because I want to hook this thing up tomorrow.
TIA Tom
PS, I'm NO ELECTRICIAN <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
<small>[ February 16, 2003, 07:08 PM: Message edited by: Tom the roofer ]</small>
TECH Junkie
Joined: Nov 2001
Posts: 3,987
Likes: 0
From: Melbourne, FL
Re: Help with HARLAN 2 step and trans brake application Tom, you don't have to mess with the yellow wire or relay. The gray and black wires just have to be grounded to activate the 2-step. That's it.
The yellow wire is an output that you can use to disable a N2O system while the 2-step is actively working...
Call me if you need to...
The yellow wire is an output that you can use to disable a N2O system while the 2-step is actively working...
Call me if you need to...
The Bull
Joined: Jun 2002
Posts: 3,578
Likes: 2
From: Grand Rapids, MI
Re: Help with HARLAN 2 step and trans brake application </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by GeorgeC:
<strong>The yellow wire is an output that you can use to disable a N2O system while the 2-step is actively working...
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Or you can use it for an arming light so that you know it truly is working. You might want it more for a stick where it's a little more comfortable knowing it's armed and ready to go.
<strong>The yellow wire is an output that you can use to disable a N2O system while the 2-step is actively working...
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Or you can use it for an arming light so that you know it truly is working. You might want it more for a stick where it's a little more comfortable knowing it's armed and ready to go.
Thread Starter
TECH Addict
iTrader: (9)
Joined: Nov 2001
Posts: 2,652
Likes: 1
From: Western Pennsylvania
Re: Help with HARLAN 2 step and trans brake application </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by derty:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by GeorgeC:
<strong>The yellow wire is an output that you can use to disable a N2O system while the 2-step is actively working...
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Or you can use it for an arming light so that you know it truly is working. You might want it more for a stick where it's a little more comfortable knowing it's armed and ready to go. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks George and Derty.
Derty, Would I hook this yellow wire to an arming switch and light and then to ground? Trust me, I'm no electritian.
George, I'll call you tonight. I still need to know about activating both the trans brake and 2 step with the same switch.
Thanks
Tom
<small>[ February 17, 2003, 07:30 AM: Message edited by: Tom the roofer ]</small>
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by GeorgeC:
<strong>The yellow wire is an output that you can use to disable a N2O system while the 2-step is actively working...
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Or you can use it for an arming light so that you know it truly is working. You might want it more for a stick where it's a little more comfortable knowing it's armed and ready to go. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks George and Derty.
Derty, Would I hook this yellow wire to an arming switch and light and then to ground? Trust me, I'm no electritian.
George, I'll call you tonight. I still need to know about activating both the trans brake and 2 step with the same switch.
Thanks
Tom
<small>[ February 17, 2003, 07:30 AM: Message edited by: Tom the roofer ]</small>
Thread Starter
TECH Addict
iTrader: (9)
Joined: Nov 2001
Posts: 2,652
Likes: 1
From: Western Pennsylvania
Re: Help with HARLAN 2 step and trans brake application Thanks for taking the time to straighten me out George. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> good talking to you.
Thanks again
Tom.
Thanks again
Tom.
Re: Help with HARLAN 2 step and trans brake application Yep, Steve's got it right
The yellow wire becomes ground when the 2-step is actually "on" (ie limiting RPM)
You connect like this....
12V -> (relay or light) -> yellow wire
the relay/indicator input is only rated to 0.5A, so a relay is needed if you're gonna run something that pulls alot of current.
One of those 12V ready LED's from radio shack works well.
Tom, you can email/PM me with questions if you have anymore.
The yellow wire becomes ground when the 2-step is actually "on" (ie limiting RPM)
You connect like this....
12V -> (relay or light) -> yellow wire
the relay/indicator input is only rated to 0.5A, so a relay is needed if you're gonna run something that pulls alot of current.
One of those 12V ready LED's from radio shack works well.
Tom, you can email/PM me with questions if you have anymore.
TECH Junkie
Joined: Nov 2001
Posts: 3,987
Likes: 0
From: Melbourne, FL
Re: Help with HARLAN 2 step and trans brake application </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Tom the roofer:
<strong> Thanks for taking the time to straighten me out George. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> good talking to you.
Thanks again
Tom. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Not a prob Tom. I don't know what you were were worried so much about. The fax that you sent me almost looked like it was drawn by an engineer! <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
<strong> Thanks for taking the time to straighten me out George. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> good talking to you.
Thanks again
Tom. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Not a prob Tom. I don't know what you were were worried so much about. The fax that you sent me almost looked like it was drawn by an engineer! <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
Trending Topics
Thread Starter
TECH Addict
iTrader: (9)
Joined: Nov 2001
Posts: 2,652
Likes: 1
From: Western Pennsylvania
Re: Help with HARLAN 2 step and trans brake application </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by GeorgeC:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Tom the roofer:
<strong> Thanks for taking the time to straighten me out George. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> good talking to you.
Thanks again
Tom. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Not a prob Tom. I don't know what you were were worried so much about. The fax that you sent me almost looked like it was drawn by an engineer! <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Trust me George, you helped me understand the whole deal. Thanks man. Besides, the only enginering I know I learnt from BOX CAR WILLIE. I got them box car blues, shuffle on down the line <img border="0" alt="[jester]" title="" src="graemlins/gr_jest.gif" /> .
Tom <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
<small>[ February 17, 2003, 11:42 PM: Message edited by: Tom the roofer ]</small>
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Tom the roofer:
<strong> Thanks for taking the time to straighten me out George. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> good talking to you.
Thanks again
Tom. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Not a prob Tom. I don't know what you were were worried so much about. The fax that you sent me almost looked like it was drawn by an engineer! <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Trust me George, you helped me understand the whole deal. Thanks man. Besides, the only enginering I know I learnt from BOX CAR WILLIE. I got them box car blues, shuffle on down the line <img border="0" alt="[jester]" title="" src="graemlins/gr_jest.gif" /> .
Tom <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
<small>[ February 17, 2003, 11:42 PM: Message edited by: Tom the roofer ]</small>
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo The Bull
Joined: Jun 2002
Posts: 3,578
Likes: 2
From: Grand Rapids, MI
Re: Help with HARLAN 2 step and trans brake application I believe you would hook up your switch as normal, probably like how George has explained. Then you can use a light in the switch or stand alone. Hook one end to a 12v source and I believe the yellow will go to ground when activated thus the light will come on. You might want to put a small inline fuse or get your 12v source off a fused circuit somewhere.
That should do it. I'd send Harlan a message and he could give you the definitive config and give you some clues on how he would wire it in to your solenoids.
<small>[ February 17, 2003, 12:03 PM: Message edited by: derty ]</small>
That should do it. I'd send Harlan a message and he could give you the definitive config and give you some clues on how he would wire it in to your solenoids.
<small>[ February 17, 2003, 12:03 PM: Message edited by: derty ]</small>
