727 Neutral Safety Switch Wiring Diagram

What does the neutral safety switch 3 pronged plug on left rear of tranny case actually do.

727 neutral safety switch wiring diagram. The outer two are for the backup lights. I m wiring the car myself with a kit. For mopars 1969 to 1980 neutral safety reverse switch pigtail repair wiring 727 904 dodge plymouth 253059841256. However one of the next stumbling blocks is the 3 wires from the neutral safety switch.

According to the wiring diagram the brown center wire goes directly to the starter relay. For mopar neutral safety backup switch repair wiring a727 a904 plymouth dodge 19 95. It may be possible to adapt the 70 wiring for use with the 727 i d have to review it. 727 neutral safety switch wiring posted.

The case is in the upper left corner. Assuming th car starts today that brown wire would be attached directly to ground. The neutral start switch allows the engine to be started when the transmission is in only park or neutral range and it turns on the reverse lights when needed 1968 and earlier cars had the reverse lights controlled from a switch on the steering column or console. 1968 valiant not stock.

I put in a 392 with a 518 727 behind it. One wire from point a to point b. Just a single brown wire from the trans all the way to the starter relay. The 2 wires for the back up light circuit could be a little more difficult to find just depends on where they were chopped.

This switch uses a simple grounding procedure to individual circuits when the switch is activated. Below it are the cooler line fittings the shifter shaft seal and neutral start switch. The pink wire is hot fused by the turn signal lamp circuit. Next are the other two wires.

The reverse light switch is located on the steering column near the firewall like usual. It is a pink white and green wire. Green wire leads to the lights after the switch. 69 javelin just got my 727 installed.

The 727 should have a three pin connector at the driver s rear side of the case. However the neutral safety switch is on the steering column up near the ignition cylinder on top behind the. But i d still like to see where it comes into main harness. I do not know where the three wires should go to from the neutral safety switch.

Assuming it has the 727 tranny and not the th400. Neutral safety switch wiring schematic. Another terminal should have a brown wire going to the nss neutral safety switch. I am going to use a b m mega shifter i had lying around the shop and do away with the column shifter.

There is a little bit more to the linkage than just a hard hookup back to the transmission. Search google images or an online service manual such as mitchell1 to obtain such diagram. Step 2 obtain a wiring diagram used to trace wires which enables continuity testing. My 69 amx has a 727 in it but i rewired the entire car steve.