Rap How-to On Nbs (keyed Accessory Power)

Diesail · January 4, 2011

Yep, any standard bosch style relay will work just fine.

chiricon · January 8, 2011

I am trying to remove the cover to the MBEC but am having problems. It looks like GM added a fastener to the center of the cover to hold it on. I am not able to remove it (at least without forcing it too much). Is there a trick to removing this cover? Here is a picture - see the red arrow for the location of the fastener. Any ideas? Thanks

Diesail · January 8, 2011

Yes, they added a pine cone type fastener to the cover in '09. Anybody that has an '08 knows they had a habit of falling off. The pine cones can be a real pain to get out. They do simply pull out though. You can get a trim panel removal tool at an autopart store, I have always been able to lift them a little with a small pry bar or screw driver then get under them with a pair of needle nose pliers and grip and pry.

chiricon · January 9, 2011

Yes, they added a pine cone type fastener to the cover in '09. Anybody that has an '08 knows they had a habit of falling off. The pine cones can be a real pain to get out. They do simply pull out though. You can get a trim panel removal tool at an autopart store, I have always been able to lift them a little with a small pry bar or screw driver then get under them with a pair of needle nose pliers and grip and pry.

Thanks, I will give it a try!

BigBodySS · January 27, 2011

I know I'm new but this would probably be a great post to sticky. This exact post is what led me here from Google and from the simply fact that it's been viewed over 4K times it's clearly a popular post.

Thanks again to the OP, this was a great bit of help.

Now if I can actually put into practice what was detailed here it will be the miracle of all miracles.

Edited January 27, 2011 by BigBodySS

rebelman06 · January 28, 2011

For those of you who stumble across this topic looking for RAP on the GMT800 trucks (formerly "nbs"), I make a similiar write up here: GMT-800 RAP How-To (99-2007 Classic)

herm0016 · March 2, 2011

just used this to hook up power for relays and switches to power my off road lights. works like a champ! thanks.

topdj · March 11, 2011

for those of you who need both the 15amp and the 30amp on RAP control I found this relay has one coil but 2 isolated

30amp rated contacts. This allowed me both a power amp and a 2 way radio that I could never accidentally leave on.

its meant for hot tubs so it weather proof. and could even be used under the hood for emergency lighting circuits

http://www.aqua-man.com/row_num.asp?ic=80056&froogle=1

xPosTech · March 12, 2011

As Gomer would say: Thank you Thank you Thank you!!!

This thread was the first thing that popped up when I searched for RAP to connect my CB.

You da Man!

Ted

cgalford · March 13, 2011

For those of you that are looking for the connector I put together a kit with the connector, lock and pins:

http://www.polymotoengineering.com/GMT900CK.html

Please excuse the website, still working on it

topdj · March 13, 2011

damn that's a good deal 9 bucks shipped, I got the pins for #10ga and #16ga but never bought a plastic connector

Edited March 13, 2011 by topdj

jryan51 · June 16, 2011

3 Female GT 280 terminals Delphi Part number 15304711 Mouser part number 829-15304711

1 Relay pigtail Parts express part number 330-075

1 Bosch style relay Parts express part# 330-079

1 GM Connector 20791502 (optional)

I'm a little slow when it comes to some of this stuff.

Does the 1 GM Connector 20791502 replace the other parts? Or would I need to purchase all items on this list.

Short of that I can follow the dots on this write-up.

Thanks for the great posts.

xPosTech · June 17, 2011

I'm just getting around to installing the RAP relay and associated wiring. I did check the GM Upfitter Site to check on another connector and discovered this Tech Bulletin covering added relays to the electrical system. I'm sure no one wants to void the warranty on any of the computers or control modules in their truck. Adding a 1N4003 diode across the windings of the relay will keep induced voltage spikes generated by the relay when it drops out might save you some hard earned $$$$.

Just a word to the wise. Read the Tech Bulletin.

Ted

Klutch · July 20, 2011

I'm looking to add a female 12v accessory plug (cig lighter type) to my truck exclusively for my Garmin GPS, do I have to go the complete relay route or can I just tap pin 2 for the 15amp of power and ground it to the body (or pin 1)?

I appreciate the write-up and input.

Edited July 20, 2011 by Klutch