I have a Yale GLC080LCNSBE085BCS, Serial Number N476459 with a Chrysler 225 slant 6. I have done a tune up including new plugs, wires, distributor cap, rotor, ignition module, resistor, new regulator vaporizer. On cold starts the forklift doesn't start but cranks for long periods of time but then finally starts. At times I have to put a jump pack on, so it starts. When it finally starts up it runs and will start every time after the initial startup. Then the next day I go through the same issues.

Yesterday found the positive cable was loose and fixed that, then it wouldn't start would just click so i hit the starter solenoid and it started right up.

Looking for some help and possible wiring diagrams and any other diagrams i can possible get. Thanks