I had a heck of a time finding any information on this subject. I'm doing an om617 swap and am using the Dakota digital dsl-1e unit. In order to get a signal from the alternator you need a "w" connection, well the stock Benz alternator and the Saab 900 alternator don't have one stock so you need to make your own. This is kinda a how to, but really just putting the info out there to help anyone else who needs it.
You got to install a "w" wire to get the reading for the Dakota digital. From what I gather the wire is a connected straight to one of the windings before regulator (uninterrupted a.c. current) so I soldered a wire to the winding. Ran the wire out a hole in the back of the casing. Put a vacuum hose around it to keep it from chafing. And connected it into the Dakota digital unit.
I say fix? Because the unit is getting a signal and my tachometer moves but i have yet to get it calibrated correctly to the point of accuracy. If I get it working I'll update this post. And if I can't get it I'll delete it. Anyone want to correct me on it and I'll learn something.
My truck is a 1986 4runner with the turbo gauge cluster (analog)
You got to install a "w" wire to get the reading for the Dakota digital. From what I gather the wire is a connected straight to one of the windings before regulator (uninterrupted a.c. current) so I soldered a wire to the winding. Ran the wire out a hole in the back of the casing. Put a vacuum hose around it to keep it from chafing. And connected it into the Dakota digital unit.
I say fix? Because the unit is getting a signal and my tachometer moves but i have yet to get it calibrated correctly to the point of accuracy. If I get it working I'll update this post. And if I can't get it I'll delete it. Anyone want to correct me on it and I'll learn something.
My truck is a 1986 4runner with the turbo gauge cluster (analog)