this has been double-posted - one (here) location is enough
What size are your ground cables/straps (1/0 (0) or 2/0 (00) are good)?
Make sure your ground strap/cables connection points are good:
- battery to frame
- frame to clutch housing (I connect this one to a starter mounting bolt).
Cover all shiney/cleaned connection points with copper-impregnated anti-seize "grease" (sold in most auto-parts-stores in tubes or small jars.
