FMX - Neutral Safety
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Cargo Master
Joined: Jul 2003
Posts: 2,730
Likes: 20
From: Four Oaks, NC
FMX - Neutral Safety
It appears my truck has an FMX transmission; the engine and transmission came out of a 1973 Mercury Cougar (351c 2 barrel). From what I am finding, the neutral safety switch is part of the transmission on C4 and C6 tranny's but is always part of the shifter housing on vehicles equipped with an FMX.
I have an aftermarket floor shifter with no provision for a neutral safety switch, does anyone have a suggestion?
I have an aftermarket floor shifter with no provision for a neutral safety switch, does anyone have a suggestion?
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
I am not positive but you may not need it. I do not use one with my converted C6 from 3spd. The only difference is my truck will crank regardless of the selector position. I know it and it is not an issue.
I am not advocating that it is the way to go, only that it can be operated without one.
John
I am not advocating that it is the way to go, only that it can be operated without one.
John
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Cargo Master
Joined: Jul 2003
Posts: 2,730
Likes: 20
From: Four Oaks, NC
Right, my truck will crank in any position. That doesn't bother me, but I would like the reverse lights to work, and I believe I will need them to work to pass the safety inspection. I might just wire them up to a dashboard mounted switch, but Murphy's Law says if I do that I'll wind up forgetting one day and driving 40 miles with the backup lights on, lol.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
OK, scratching head, what does the N Saftey, have to do with backup lites?
You can ask if backup lites are required to pass before getting inspection. You can mount a switch with a light on it so you will know when it's being used.
John
You can ask if backup lites are required to pass before getting inspection. You can mount a switch with a light on it so you will know when it's being used.
John
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Cargo Master
Joined: Jul 2003
Posts: 2,730
Likes: 20
From: Four Oaks, NC
On most transmissions the neutral safety switch includes 4 wires, 2 that are connected when the transmission is in P or N (wire that to the switch going to the starter) and 2 that are connected when the transmission is in R (wire that to the backup lights). So it's all one switch.
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