After doing an intake manifold gasket repair, I fired it up & it shut down just fine. Try a few minutes later & now it won't shut down w the key. I have an AAW harness, two wire alt (brn/red wires) w/ a summit elec. ign box, & pertronix dist. I've read here about a diode. Do these have arrows indicating current flow?, & if so which way is it installed. Any help would be much appreciated.
Larry.
Larry.