Electrical coupling of chemical oscillators is shown to be a versatile and rapid method to study the propagation of action potentials (spikes, oscillations) using three, four, and six electrically coupled continuous flow stirred tank reactors (CSTR). Starting with a prepared excitable steady state close to a SNIPER bifurcation in the Belousov-Zhabotinsky (BZ) reaction, conditions are specified for the initiation and propagation of these action potentials in a linear array of reactors and in a cyclic array. In the cyclic array, traveling waves of action potentials were measured for the first time. The coherence and incoherence of two, three, and four chemical BZ oscillators which were mutually electrically coupled was also studied. Numerical simulations with the seven-variables Montanator are in fair agreement with the experimental results.