have a tci trans brake. it must have the button pushed to put car in reverse. do you put shifter in rev then use button or do you hold button then put shifter in rev. someone told me you could burn something up. thanks guys

I had one a long time ago, it seems to me if you push the button in nuetral or reverse it would back up Maybe brands and different versions work differently Call the commpany that makes yours and ask them

i have a tranzact t/b vb. i wired in a switch so i don't have to hold in the button for rev. i can back up in neutral. try it in neutral with the button on. it won't hurt anything.

usually since the TB button activates reverse. neutral is the prefered shifter location. Check with your valve body manufacturer.

A trick I got from Rick Allison if your reverse lights still work just pickup power at the nuetrel saftey switch out to the the lights wire it in with Tranz brake put it in reverse and you dont have to hold the button I did this when I was still running my dart

On the TCI instructions it states a turbo 400 can be done in reverse or neutral. nothing is stated for the 727.

http://www.tciauto.com/tc/727-904-trans-brake-valve-body.html

kind of looks like a tranzact or grinder brake...

NOTE: To engage reverse, the Trans-Brake button must be used

in the instruction for the TCI 727/904 transbrake valve body

http://news.compperformance.com/Instructions/121900.pdf