That is looking good
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So Im wiring the 4l60e. I got the big round harness made. Now as far as the neutral safety switch, do I need to wire any of this? I am using the dakota digital shift switch thing to light up the dash shifting indicator lights and it has a provision for a reverse light hook up on it as well. So what do I need the gm nss for or do I need it at all?
I have always used the Park\Neutral switch function to prevent starting the vehicle in gear..
Looks like c1 34 needs ground when in park or neutral. This is a orange/black wire. This tells the ecu if it's in gear or not.
Is the park/neutral safety switch 1 plug or 2 plug?
2 plug on mine.
Just looked at a pin out diagram, orange black wire looks like the park/neutral signal.
The 4 wires from the small plug are the transmission range signals and go to the PCM.
Ok I see it now thanks
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So the only purpose for the 7 pin connector on the nss is to wire reverse lights and to wire a circuit to keep it from starting in gear right? Looks like none of those wires go to the ecu.
thatcabledude
GOLD Star
That’s all mine is doing.
How did you wire the circuit for not starting in park cable dude?
thatcabledude
GOLD Star
You mean in gear? Lol
I was hoping you wouldn't ask.....
I don't remember.
I was hoping you wouldn't ask.....
I don't remember.
Well thought I would check. I may not wire that up anyway. Its always something that can be added. I will wire up the 4 pin for sure. I need to find where the PO who did the initial swap left the remnants of the reverse lights wire.
I just bought pigtails and a bunch of generic wire off eBay and added wire. Here is the main trans harness I made. It's split into 2 groups right after the pigtail, one for the group that goes to red and the other goes to blue ecm plug.
thatcabledude
GOLD Star
Without doing a little digging in my notebook and/or EWD to give you exact colors, I tied 1 wire from the bundle of 4 that comes up from the NSS/gear indicator box to a factory wire behind the glovebox. In doing so it made my reverse lights come on properly, and the dash indicator illuminate.
In my case the correct wire from the trans for the reverse lights was slightly heavier gauge than the others.
Hope that helps.
where did you get signal for reverse light i have 2007 5.3 with 4L60-E and i can't find reverse signal
Look here. You get it from the NSS 7 pin connector.
6.0l truck wiring harness question - LS1TECH - Camaro and Firebird Forum Discussion
in that link talk is about older style plug i have new style plug with 12 pins and it is using 6 wires i already checked all the wires and no luck
Oh OK. Look at post 21 here...
Question about PRND connector - The 1947 - Present Chevrolet & GMC Truck Message Board Network
