steering column switch
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Mountain Pass
Joined: Jun 2013
Posts: 100
Likes: 2
From: Superior AZ
steering column switch
I converted my truck from auto to 4 speed manual a while back, in the middle of switching out the steering column right now. Just noticed the automatic column has a switch inside the cab down low on the shaft, four wires on it. Isn't the neutral safety starting switch on the transmission itself? What is this switch and whats the best way to remove/jump it out? My truck is a '74 F350 2WD.
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,243
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From: S/W Missouri, Polk county
73 to 7.5 safety neutral/reverse lights switch is on the column and 77.6 ish -79 is on the trans. You will need to figure out a wiring by pass or just tie wire the switch in the "park position" so the truck will start.
Hang in there someone will tell you how to actually bypass wire it to work properly. But to get the reverse lights to work, that might take a toggle switch??
Hang in there someone will tell you how to actually bypass wire it to work properly. But to get the reverse lights to work, that might take a toggle switch??
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
When the trucks came with a manual trans, there was a dummy plug used to bypass the NSS switch. I've never been able to come up with a part number for the dummy plug.
To bypass the automatic set up:
Unplug the switch and discard or ignore.
There are four wires in the harness plug, two each, red w/ blue trace and black w/ red trace. Run a jumper between the red/blue and red/blue, do the same for the black/red.
That completely bypasses the NSS switch. Your truck will now start
and the back-up lights will be permanently on 
.
On to the back up lights.
In the engine compartment is a little U shaped jumper wire. It'll be located on the drivers side splash pan, just in front of the firewall where the wiring harness comes through.
Unplug the little jumper, this will shut off the back up lights. There should be a back up light switch on the trans cover. Run two wires from the switch to the two wires that were jumped. This will get your back up lights working again.
Just a note, you could make a jumper plug out of the NSS. Cut the switch off the harness and splice the two pairs of wires. I just hate to cut these switches up. New, they're getting pricey.
Here's the little jumper in the engine compartment.
EDIT: If you don't care about the back up lights, just jumper the red w/ blue trace wires. This will by pass the NSS but the back up lights won't work.
To bypass the automatic set up:
Unplug the switch and discard or ignore.
There are four wires in the harness plug, two each, red w/ blue trace and black w/ red trace. Run a jumper between the red/blue and red/blue, do the same for the black/red.
That completely bypasses the NSS switch. Your truck will now start
and the back-up lights will be permanently on .On to the back up lights.
In the engine compartment is a little U shaped jumper wire. It'll be located on the drivers side splash pan, just in front of the firewall where the wiring harness comes through.
Unplug the little jumper, this will shut off the back up lights. There should be a back up light switch on the trans cover. Run two wires from the switch to the two wires that were jumped. This will get your back up lights working again.
Just a note, you could make a jumper plug out of the NSS. Cut the switch off the harness and splice the two pairs of wires. I just hate to cut these switches up. New, they're getting pricey.
Here's the little jumper in the engine compartment.
EDIT: If you don't care about the back up lights, just jumper the red w/ blue trace wires. This will by pass the NSS but the back up lights won't work.
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