The Stovebolt Site Forums The Shop Area The Electrical Bay Delayed Engine Shut-off

Hi, Everybody!
I have a '47 Loadmaster 1-1/2 Ton that I got about a year and a half ago. It was a former farm truck, and in really nice shape for it's age. A former owner had installed a 307 V8 out of a '68 Impala, along with converting it to 12 volts.
My question is this: when you turn the key off, the engine runs for 1 or 2 extra seconds before shutting off. I've been told that this is because there is a resistor in there-(maybe for the gauges?)
It's not really a problem, and I'm not even concerned about fixing it. I'm just wondering why it does it- I've never seen that before in a vehicle.
I realize that eventually I'm going to have to re-wire this thing- either from scratch, or with a harness of some sort. Between the engine swap, plus a couple things that I added, it looks kind of like spaghetti, both under the hood, and under the dash! Plus, the original wiring that's left is beginning to show it's age.
But for now, I'm just having fun with it.
Any input anyone has will be appreciated. Thanks!! Rich

The wire from your alternator, coming from your ignition/fuse panel, needs a diode on it -- note below:
[img]http://www.alanhorvath.com/54chevy/chevypics/wiring_1.jpg[/img]
The above is how I wired my engine area, bringing full power to everything from the firewall -- made a huge difference!

Before I did the above, my engine was running-on for a half-second or so ... after installing the diode, WOW - what a great feeling! When I shut the engine off, it really shuts OFF.

To read about the whole deal (above), Click Here

Alan:
Many thanks for the info. When I get brave enough to tackle this re-wiring project, I will put this information to good use, as well as your other wiring tips. I have been reading a number of your posts, and have also checked out your web site. BEAUTIFUL truck!!! Thanks again!