Electrical Schemtaic Education Needed Options

[kenshapiro2002]

So, for example, when looking at the tachometer on the schematic, the three bottom wires are numbered 31, 15 and 1 and are not circled. those same wires all have the number 20 at the far end and those 20s are circled. I have no idea what any of that means.

The red #30 coming off the fresh air fan relay has a damn circled 11 right in the middle of the line before it gets back to fuse #12.

TIA for the education.

[ghuff]

Some of the 914 are current flow diagrams as well Ken.

It helps to think of the terminal #'s as a "bus" or trunk.

Pelican parts has a better explanation of current flow diagrams than I could give.

http://www.pelicanparts.com/914/914_electrical_diagrams.htm

How do you read a current flow diagram? It took me a little time to figure it out. Look at it this way. Imagine that you are looking at a diagram that shows waterfalls emptying into a lake. At the bottom of the page (electrical ground), it is similar to a large lake that the waterfalls empty into. At the top of the page (high voltage potential) it is similar to the top of the cliff, right before the waterfalls off the edge. Each path that the current diagram shows can be interpreted as a separate waterfall that turns a small turbine and generator as it falls down into the lake. The electrical accessory can be seen as the generator. The battery of the car is similar to a pump that pumps water from the lake back up to the cliff.
After you get used to them, you will undoubtedly find that the current flow diagrams are much easier to read, primarily because they separate circuits from each other. You don't need to mess with one circuit that you don't care about, just to find an electrical fault in another. The current flow diagram can tell you everything that you need to know right away.