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Why don't you unplug it and see what stops working? Then you'll be able to be the club's highest expert on "Red Button Fuctions"!

I've got my money on the "Fuel Pump Reset Theory", myself.

according to the NISSAN 1974 260Z Service manual (p/n 20041 1973) That button is part of the starter interlock system (except for Canada). ......"

From the manual

Description: The starting system of S30 models is provided with STARTER INTERLOCK DEVICE in accordance with MVSS 208.

The engine can be started and the warning buzzer and light will not activate only when every front seat occupant observes the following requirements for starting the engine.

(1) Seatbelt is fastened after occupant is seated

(2) When none of the seats are occupied

If the engine stops the starter interlock device will allow restarting of the engine any of the following conditions

(1) the ignition key remains turned to the "ON" position

(2) The driver remains seated

(3) It is within 3 minutes after turning the ignition key to the "OFF" or "ACC" position

In an emergency the engine can be started by observing the following

(1) Turn the ignition key to the "ON" postition

(2) Push the switch button inside the engine compartment

(3) Turn the ignition key to the "START" position

There is also a table defined which shows specific scenarios

It has to do with the driver and passenger seating scenarios and the belt switch....

.........Let's digest the schematic :geek:

Here's another one that has the same thing.... guess most of us never looked that closely under the hood of a 260 huh?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=6187&item=1875343933

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