I'm running a string of about 100 dumb RGB 12v rectangular modules and need to inject power every 40 modules or so. My question is can I just run a single wire to inject additional power (same power supply and/or RGB amplifier) directly to the 12V+ wire and continue the R, G, B negatives from the previous 40 modules, or do I need to run an additional 4 wires and inject 12v+, R, G, and B negatives every 40 modules? Is there any downfall to continuing the 3 negatives through 100 lights as long as I'm adding addition +VDC as needed? Thank you!!