thank you for the informationPlease read the topic.
Everything you need to know is in this topic.
Schematics, source code, directions how to change the readings of the ODO meter and how to enable the MPH/KMH toggle button.
And I'm not building any converter for others because there are ready to use converters for this purpose already by Modifry and others.
For me this is just hobby. I don't want to spent all my spare time providing support to a product I've sold.
You need to multiply by 39. The SGI-5 can only multiply by up to 4. Or you chain 10 SGI-5 convertersThe SGI-5 is used as either a signal multiplier (up to 4X) or signal divider (up to 125X),