5.3 into a 95 Sierra HELP!!

Hello to all,
I am doing an install of a 5.3 Vortec motor into a 95 Sierra with a 5.7. I completed all the of the mechanicl install and I seem to be hung up on a few pieces of wiring.
What I am looking to know is what wires will control the LED's behind the PRND321 indicators??? I have found Park, Reverse, and 2nd as they were located by the stock ECM under the passanger side dash but I cannot find the others.
Has anyone confronted this part of the install??? I have gotten all of my gauges to work properly, and this is all that is left so that I can start tuning.
Speaking of tuning.... I will make another thread for an idle issue I am having.
Thanks in advance for all of your help and I look forward to contibuting help here!

Chris, you've got to get the wiring diagrams for both your truck, and the donor motor. Things changed every year, in the mid-90's. Transition years with GM, with regards to wiring.

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Originally Posted by LS1GMCTruck

Chris, you've got to get the wiring diagrams for both your truck, and the donor motor. Things changed every year, in the mid-90's. Transition years with GM, with regards to wiring.

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Thanks for the response!
I have the Haynes Manuals for both and the problem is on the truck side of things, (By the way I am using stock tranny with his stock drive indicator switch/neutral safety switch attached to it)
Nowhere in the manual does it cover this wiring scematic. Would I need to see a service manual??? If so where should I look for one if I need it now??
Also, if anyone has the answer to the original question then please post!
Thank you again

GM Service Manuals for your year truck available on E-Bay. Haynes are poo-poo.