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[QUOTE=tangofox007;2536508]Can you show us a "backout diode" on an electrical schematic? When I Googled the term, the only thing that came up verbatim was a comment in another forum. The comment was left by none other than TX76513. Apparently, you are the only person who knows what a "backout diode" is!!!
Probably not the only person. Try Schottky diode. Most people use backout probably because nobody know how to pronounce Schottky. Very common in solar pannels now, marked on the schematic and or diode with an arrow to show the direction of voltage flow (voltage Clamp). This diode is part of a diode pack (trio) in an alternator.
Place one of the ohm meter leads on the single connector on the Trio (Touch the other lead to each of the other three connectors, one at a time. The meter needle should either show continuity or no continuity, but should be the same for each of the three connectors. Now reverse the ohm meter leads and do the test again. The meter reading should now be reverse of the reading achieved on the first test (if the needle “pegged” on the first test, it should do nothing with the leads reversed). All three connectors should be the same. This test verifies that current can only flow in one direction, and the same direction, through all three of the diode connectors. If any of these readings is not correct, the Diode Trio is bad.
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