Steve/Rick,
I would never power source instruments in series for just the reasons you mentioned ,it makes trouble shooting just that much more complicated and i wouldnt want the monitors for my engine to be that vulnerable. That said ,what I was suggesting was to NOT stack 7 or 8 terminal ends on the back of a meter ,but to jumper just the lamps and ground to the chassis from each end for some redundancy. of course a ground lead for each lamp does make for easy trouble shooting ,but does not offer the "backup" ground lead
on the other hand my common sense says I should probably defer to any of the Kirkhams when it comes to things Cobra
