Start Up And Turn Off

Hi all,
Not an auto tech but can stumble through a diagram easy enough. I got my hands on a new wiring harness for my 1959 CJ5 but its wired for a generator/voltage regulator. My jeep has a delco remy alternator (SI10 I believe) I am trying to figure out how to wire this up CORRECTLY and reliably. I have found several diagrams and all say something different. After some trial and error I was able to get power to the instrument cluster, start the engine but it will not turn off. Please help. Thanks.

 

The excite wire to the alternator from the ignition switch stays high when the alternator is spinning. This back-feeds into the ignition switch, so when you turn off the switch power now comes from the excite connection and the engine does not shut off.

There are at least 3 ways to deal with this. Jeep uses a resistor (nichrome wire) to the excite connection. The resistance is small enough to excite the alternator on startup but large enough to strangle the ignition when you turn off the key. Instead of a resistance wire, you can use an _incandescent_ bulb in the excite wire. This has the added advantage that the bulb becomes the "alternator light" which signals a defect if the alternator fails to charge. Or, you can put a diode in the wire, so that the current can only flow one way in the excite wire, preventing back-feed.

 

Howard's attachment does not work for me.

 

A-ok!

 

I see... I have a diode in but it wont turn over every time I connect it. Weird... I'll try the idiot light route... where do I get one? Wire it myself? Thanks guys and thanks for the explanation/diagrams

 

Would this most likely be the light that illuminates the "amp" light?

 

If I hook that one up to the ign terminal the light stays on in the off position ( and still doesn't start)

 

You should be able to remove the excite wire entirely and not affect starting and running.

 

I got it... I'm just stupid... I think I might be good from here on out. But chances are I'll be back. I'm rewiring the whole jeep but an unexpected move (that's moving where I live) got thrown in, so I need the old girl to run at least to the new place where I can finish the wiring. Thanks again guys...

 

Alright gents... so shes turning over but not firing up... had it started just 3 days ago... what am I missing?

 

got juice to the coil in both run and start position? still have points? if yes on points they could be cooked with all the juice flowing without running

 

Yup spot on... wire to the coil broke. Got it now thanks

 

So I have a 15 amp fuse in line between the starter solenoid and the batt terminal on the alternator. I only used a 15 amp because that's what the PO had in before me but it has blown twice now. Do I increase the amp or do I have a problem elsewhere... I put in a fuse from a previous diagram... thanks in advance

 

This for sure. It's not a good idea to run the alternator with no load (open circuit) if it is excited ( power to the 1&2 terms).