94 Lifted Silverado 6.0/4L80e swap Build

[bobbylog]

How do I do that? I'm sure thats the problem because I havent done that lol

I have never do that to but from what I've read you need a switch like this.
http://www.ebay.com/itm/TCC-BRAKE-SW...item27c42fbcc4
http://secure.ultracart.com/catalog/...f/KIT-1002.pdf
I've read that you can use a relay to but in my case I will just buy the switch.
Your nelsons harness is supposed to have 1 or 2 wire ready to hook to the switch.
Edit:

For automatics with lock up converter, the PCM needs signal when brake pedal is pressed. However, the signal needed is opposite how you're brake lights work. The PCM wants 12v+ constant on this wire when brake IS NOT pressed, and OPEN Circuit when the brake IS pressed. If you vehicle was equipped with a lockup trans to begin with, you probably already have the proper normally closed switch mounted by your brake light switch. If you do not, you can use a relay to perform the same thing. On most relays, there are 5 terminals, 2 of them turn the relay ON when provided ground/power. There are then a normally open leg and a normally closed leg on the relay and a supply. By feeding 12v+ on the supply leg, and hooking the Brake Switch Signal wire to the normally closed leg, you will now have the correct signal for the PCM. When the brake is pressed, 12v+ flows to brake lights, tap into this wire, and run it to the relay to turn the relay on. This will cause the normally closed leg to become open, thus turning OFF the 12v+ signal to the PCM. When you release the brake pedal, the relay will turn OFF, and then feed 12v+ to the PCM.

From Lt1swap.com http://lt1swap.com/wiringharness.htm
So you are supposed to already have a brake switch like this.

[92 6.0]

How do I do that? I'm sure thats the problem because I havent done that lol

Its real easy. Just find the brake switch in your truck. Its on the pedal up under the dash a lillte bit. And then look for the purple wire and splice the one from your swap harness to it and your done.

[HPICamaroSS]

Its real easy. Just find the brake switch in your truck. Its on the pedal up under the dash a lillte bit. And then look for the purple wire and splice the one from your swap harness to it and your done.

Do you know which wire I have to splice it into on Nelsons harness? Because their harness is a 4 wire hookup, and that doesn't include a wire for the brake

[RedHeartbeat]

Power may be coming from Blue PCM connector pin 19 or it may be wired into the power lead that is going to the 4 wire connector for 12v power, could be switched or always on.

[bobbylog]

Do you know which wire I have to splice it into on Nelsons harness? Because their harness is a 4 wire hookup, and that doesn't include a wire for the brake

This wire is supposed to be with the dash group speedometer,tach...Also did you wire your park neutral switch? The pcm need to know when you are in gears..

[RedHeartbeat]

You don't have to have a PRNDL switch for it to work, there is a setting in HPTUNERS to turn the PRNDL device off.

[RedHeartbeat]

[bobbylog]

You don't have to have a PRNDL switch for it to work, there is a setting in HPTUNERS to turn the PRNDL device off.

I was sure you need it because you can adjust it in hp tuners in target idle tab thanks for the info!I learn something new here everyday!
http://imageshack.us/photo/my-images...nersidles.png/

[HPICamaroSS]

Power may be coming from Blue PCM connector pin 19 or it may be wired into the power lead that is going to the 4 wire connector for 12v power, could be switched or always on.

Ok I'll try that thanks!

[RPM Graphics]

i have a Nelson harness too & didn't have to hook anything up to the brakes, & i don't have a neutral safety switch, & mine shifts & stops just fine.
how's your idle when you try to stop, is it high?