Thanks. I’ll look into it tonightWhat we need to do is to find a series current limiting resistor that will allow a reasonable current to flow, but not burn out!
For example a 100 Ohm resistor.
This will permit a maximum current flow of 15 V / 100 Ohms = 0.15 A (150 mA).
At 0.15 A, the resistor will dissipate 0.15 * 0.15 * 100 Watts = 2.25 W. So a 0.25 W resistor would burn out pretty quickly if subject to a short circuit on the motherboard!
See what you have got and calculate the maximum current flow and maximum power dissipation to see what will work. I have some rather (physically) large resistors bonded to a very big heatsink for just this eventuality!
I really appreciate the patience all you guys are showing! My knowledge of electricity is terrible. I can follow along on schematics, which is a bit like a programming flowchart, but I failed Ohm’s Law in high school