Then perhaps you need something like these:
https://www.amazon.com/Partsam-Trip.../B0B8VQSDGH/ref=psdc_3094906011_t1_B08JBJ5JJB
I do whish the US would adopt the amber light for turn signals standard. That would make it so much easier to wire up the lights on a TOAD like a Fiat 500 if the motorhome and TOAD both had the same light system.
Amber is just a color.
Most cars now use separate turn and brake bulbs
This has made wiring for trailer MORE difficult as most trailer usena common brake/turn signal bulb
BUT, this can be resolved by using a 5-wire to 4-wire conversion module:
https://www.amazon.com/s?k=5+to+4+w...wire+to+4+,aps,206&ref=nb_sb_ss_ts-doa-p_2_12