This has been a real learning process. The above post by my friend really was an AHA! moment for me. I was looking all over for a signal that represented engine off vs. engine on. This is important for an audible warning system so that when you turn the ignition key it does not start sounding right away since oil pressure is obviously low. I tried voltages at the coil, HEI distributor, even thought about adding a whole nother circuit. I don't know much about this so the alternator having a terminal made especially for this? ZOOM! Right over my head.
So, this is also an added bonus for anyone who has replaced their generator with an alternator. The new circuit will have a small light on the mounting plate that will have two relays, a fuse, and a small gauge light. I envision mounting this small plate under the dash. You won't be able to see the light from there, but if you suspect your charging system is dead or dying, you know where to look. It would not be hard at all to relocate the light if you so choose.
The small circuit will light the light during an alternator failure, but not provide an audible warning. The only audible warning will be when the oil pressure is too low (6 psi). I prefer it that way so that you can differentiate better. Since I am doing this for everyone, if you have a different opinion, now is the time. The idea is to never hear that ear piercing warning EVER unless something goes wrong with the oil system.
A good friend stopped by the shop yesterday and asked what I was doing, and he said he wanted one of those and how long did he have to wait. Maybe a few weeks. I have some small issues to iron out with my new circuit. Nothing works for me the first time. I am one of those who has to make several attempts before success. Its a training process where you make the issue understand you are not going anywhere until you have succeeded!
