No need to worry about the suspension - no such function is triggered as Grentarc mentioned.
The resistors activate the following:
- disable rear parking sensors
- change Transmission shift to optimise towing
- prevents automatic raising of suspension to offroad height (must manually select)
Ok a quick calculation. the float is consuming 15a with everything on - not significant.
The resistors only come into play intermittently- for the fraction of a second the indicator flashes... no risk there.
Your power systems will more than handle what you are asking of them.
My driving lights consume 41amps alone.. [emoji6]

