Actually it's not a resistor, tech talk it's called a PI network
fancy way of saying in this case, 2 resistors in series, and two caps to ground on the load side (tach side) of the network....
I dunno how to get the schematic on here for it, I have it printed from years ago off the internet....
the tach out off the dizzy goes to a 5.6k resistor, then a .1 mfd cap to ground on other end of resistor, from that r/c junction take a 10k resistor to a 100pf cap to ground, and from that 10k.100pf junction take a wire to tach input....the wattage rating on the resistors should be 1/2 watt, caps around 100 vdc or better....
tech speak, i'ts a pulse integrator, smooths out the tach signal for the tach input, it was done under the hood, I SUSPECT as an aid for AM radio reception....AM radio was a hot lick back then...
:laughing: :devil: :cheers: