lelandEOD
SILVER Star
So, here's the deal. I want to add a small panel to my dash that will house warning lights that are not already incorporated into my Dakota Digital HDX gauge cluster. The DD cluster has a CEL, diesel Wait to Start, etc., etc.
The 1HZ engine that's going in has a couple extra senders to monitor the fuel sedimenter, air filter, oil level, and alternator charge status.
I've sourced a bunch of 3mm LEDs and have talked to a really awesome laser engraver in town who will make the panel. It will look something like this:
The plan is to mount in on the dash near the headlight switch. Somewhere near here:
But, before I commit to punching a rather large hole in my dash, I really need to have a warm and fuzzy that I both understand the wiring diagram and that I can replicate the needed circuits. I'm getting a little fuzzy in my wiring diagram-fu with the diodes and resistor seen in the charge light bulb circuit.
The air filter, fuel filter, and brake fluid/vacuum circuits all appear to be pretty simple ground switches - no problem there. I also think I can work out the bulb-check relay (I know it isn't necessary or anything, but it would be kind of cool if the brake warning lights came on in the ST1 position).
But, the charge light circuit is getting the better of me. I don't understand what the diodes (and resistor) do and I'm struggling to understand how the charge light even works. The bulb shouldn't illuminate when the ignition switch is in the IGN position and the alternator is charging, right? Can anyone help me understand how this circuit is supposed to work?
If anyone can look at this and help me understand how it works, I would greatly appreciate it.
Here's the charging circuit:
And here's an excerpt of the gauge cluster diagram that shows several of the warning light circuits:
View attachment 1823851
The 1HZ engine that's going in has a couple extra senders to monitor the fuel sedimenter, air filter, oil level, and alternator charge status.
I've sourced a bunch of 3mm LEDs and have talked to a really awesome laser engraver in town who will make the panel. It will look something like this:
The plan is to mount in on the dash near the headlight switch. Somewhere near here:
But, before I commit to punching a rather large hole in my dash, I really need to have a warm and fuzzy that I both understand the wiring diagram and that I can replicate the needed circuits. I'm getting a little fuzzy in my wiring diagram-fu with the diodes and resistor seen in the charge light bulb circuit.
The air filter, fuel filter, and brake fluid/vacuum circuits all appear to be pretty simple ground switches - no problem there. I also think I can work out the bulb-check relay (I know it isn't necessary or anything, but it would be kind of cool if the brake warning lights came on in the ST1 position).
But, the charge light circuit is getting the better of me. I don't understand what the diodes (and resistor) do and I'm struggling to understand how the charge light even works. The bulb shouldn't illuminate when the ignition switch is in the IGN position and the alternator is charging, right? Can anyone help me understand how this circuit is supposed to work?
If anyone can look at this and help me understand how it works, I would greatly appreciate it.
Here's the charging circuit:
And here's an excerpt of the gauge cluster diagram that shows several of the warning light circuits:
View attachment 1823851