Alternative Tach pick-up for shift light???
I want to install a shift light but the location of my harness into the PCM is physically very hard to reach for safely soldering a splice. Is there an alternative location to get the same tach signal, like in the engine compartment to have better physical access for splicing a wire?
Mazda Rx7 LS engine, PCM in pass footwell, full roll cage. Hard to reach and I risk damaging the harness wires by manipulating, stripping, and attempting to solder, around the rollcage.
Thanks in advance.

