Sorry if this doesn't belong..

[Tudorp 239]

But I didn't get any response in the Electrical area.  But,  I am back messing with this stuff after a decades long hiatus. And I am a bit confused. I am building a Sand Scorcher, and am going to use some vintage electronics for it. It is an 80s era Hi-Tec transmitter, receiver and steering servo. And I wired an old Futaba ESC with a comparable plug to plug it into the old receiver. Tested it all, and it is working. However, I just noticed this Futaba ESC does not have a Switch wire to plug into the on/off switch of the car. How do I wire in the on/off switch to turn this thing off without having to disconnect the battery every time? 

 

 

[Butler 338]

My friends old Kyosho Lazer had the same ESC. I am guessing you can't unless you put a switch on one of the wires to the battery.

[Tudorp 239]

I was thinking that but it would have to be a pretty beefy switch due to the amperage available from the batteries. 

[WillyChang 1814]

The switch in every ESC I've opened merely cuts the power supply to the RX via the servo lead. Think it's usually the ground (black/-Ve) lead that's switched.