So I'm swapping the C6 out of my 87 F150, for the AOD out of an 89, and obviously the Neutral Safety Switch is different, does anybody have a wiring diagram for that circuit on an 89, and possibly any idea what the part number is for the connector? It's the round 5-pin style.

 

When I looked up NSS connectors for an 89 I only saw 8 pin connectors...

 

The one that is screwed into my transmission looks just like this:

More Information for STANDARD MOTOR PRODUCTS NS54 (rockauto.com)

Except it's got 5 pins, not 4.

 

That helps!

You sure your not counting the center hole as a pin... looks like you should have a 4 pin connector with a center hole to align the connector to the switch.

https://lmr.com/item/LRS-8693NSS/Mus...utomatic-86-93

https://transmissioncenter.net/shop/...light-pigtail/

https://www.summitracing.com/parts/rfw-pg057

 

Yes, I'm sure, it has five metal pins, surrounding the central plastic locating pin

 

Is it an NS-44?

 

It's this.

 

Yeah, that looks like the NS-44, but I haven't been able to find a matching 5 pin connector yet... nor have I stumbled on a wiring diagram, everything is the 4 pin version.

 

I've got no issue just getting the 4-pin version if that's what it takes, the switch is cheap enough, I'd just rather not buy a switch if I don't have to.

 

I have no idea if this can help you with the wiring

https://schematron.org/89-bronco-aod...g-diagram.html

 

Thanks sandy, that tells me what I need to know. Looks like that fifth pin doesn't actually have a function, Apparently I can just clip it off and use the 4 pin connector.

 

Ok, so for some *bizzare* reason, the pigtail that runs from the NSS on the AOD has a Female connector on the end where it plugs into the harness. Which would be fine, except the Harness has a female end on it as well. So obviously they aren't going to plug in.

I need to splice the Male connector off of the C6 onto the pigtail for the AOD, so I have a functioning Neutral Safety Switch, and Backup Lights.

So herein lies my problem.

According to my EVTM

Red W Light Blue Stripe is the wire for the Starter interlock. It exists in the AOD Pigtail, and in the C6 NSS wiring.
Purple W Orange Stripe is the Backup Lamp Activate Wire. It exists in both the AOD and C6 Harnesses.

Now here is the part that I can't figure out/havent found in my EVTM yet.

The AOD Harness has the following 4 wires:
Purple W Orange Stripe
Red W Light Blue Stripe
White W Red Stripe
Black W Purple(Pink?) Stripe

The C6 Harness has:
Purple W Orange Stripe
2X Red W Light Blue Stripe
Black W Pink Stripe

So obviously, Splice P/O to P/O, and B/P to B/P, but which one of the R/LB wires on the C6 harness is the one I want, or does it matter on that circuit?

Just Wire the R/LB on the AOD Harness to one of the R/LB on the C6 Plug, and the W/R to the other R/LB?

I love wiring...

Just in case anybody asks. 1987 F150 4x4, 4.9l It left the Factory with a C6, I removed the C6 and replaced it with an AOD.

 

So just as a followup, in case anybody comes looking in the future. The 2 R/LB wires on the C6 NSS harness are basically identical. The polarity doesn't matter, so just hook up the AOD R/LB to one of the C6 R/LB and the W/R from the AOD to the other, and everything works just peachy keen.