1975 Starter Switch????
Thread Starter
Advanced
Joined: Mar 2003
Posts: 98
Likes: 3
From: Oglesby Illinois
1975 Starter Switch????
I have a 75 L48. In the engine compartment on the passenger side on the firewall there is something that looks like a relay. It has a rubber button and the label next to it says "Start". What is it? Is it some way to start\turnover the motor while under the hood. At any rate I can't get it to do anything and I can't find any info on it.
Thanks.
Thanks.
Safety Car
Joined: Oct 2007
Posts: 3,729
Likes: 267
From: Austin Texas
Corvette of the Year Winner 2017
2016 C3 of Year Finalist
It is not orginal eguipment,
unless it is a button trigger for a factory alarm.
where do the wires go ?
I can make a label to say anything.
pictures ?
unless it is a button trigger for a factory alarm.
where do the wires go ?
I can make a label to say anything.
pictures ?
Racer
Joined: Nov 2006
Posts: 495
Likes: 1
From: Lubbock TX
i have a 75 also and have the exact same relay. I was told it was a remote start switch, but it doesnt work. Same person said for it to work the car had to be in neutral with the e brake on, but ive never tried.
Surely someone on here has the reason for it being there.
Sean
Surely someone on here has the reason for it being there.
Sean
Le Mans Master
Joined: Jul 1999
Posts: 9,206
Likes: 17
From: Sewell NJ
It's part of the seat belt interlock system. I thought it was a 74 only item but I guess the safety ***** held on to it until 75.
From the GM Manual
Take a look here if you're having problems.
http://home.comcast.net/~vettfixr/page16.htm
From the GM Manual
"the bypass relay on the firewall permits starting the car by bypassing the interlock relay in the event of system failure. To activate the relay, turn the ignition key to on. Then, open the hood and press and release the bypass relay button. THE OVERRIDE MECHANISM WILL BE DAMAGED IF THE BUTTON IS HELD IN THE DEPRESSED POSITION. The engine may then be started by turning the ignition key to start. The relay will remain engaged until the ignition key is turned to OFF or LOCK".
http://home.comcast.net/~vettfixr/page16.htm
Race Director
Joined: Oct 2000
Posts: 12,652
Likes: 3,110
From: Shamong, NJ
Vettfixr's right, in 1974 the Fed's decided we shouldn't be able to start our cars without buckling the seat belts. The system wasn't great and the switch under the hood was there to over ride the system if (when) it failed. So many people had trouble with it and/or just dissabled it that the feds repealed the law for 1975. I think that 75's built in 1974 were still subject to the seat belt interlock requirement. The repeal took effect around Jan. 75,
so most 75's shouldn't have this switch.
so most 75's shouldn't have this switch.
Melting Slicks
Joined: May 2006
Posts: 2,364
Likes: 103
From: Centerville Louisiana
Vettfixr's right, in 1974 the Fed's decided we shouldn't be able to start our cars without buckling the seat belts. The system wasn't great and the switch under the hood was there to over ride the system if (when) it failed. So many people had trouble with it and/or just dissabled it that the feds repealed the law for 1975. I think that 75's built in 1974 were still subject to the seat belt interlock requirement. The repeal took effect around Jan. 75,
so most 75's shouldn't have this switch.
so most 75's shouldn't have this switch.
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Thread Starter
Advanced
Joined: Mar 2003
Posts: 98
Likes: 3
From: Oglesby Illinois
Yeah...I found it last night in a wiring diagram. It is called the "Starter Interlock Override Relay". Not sure what it has to do with the seat belts as my wiring diagram didn't show anything related to the seat belts......although maybe I just missed that. Thanks for the help.
