simple headlight wiring problem

Just need a little help Basically I'm adding 2 spotlights to my motorcycle and rewiring my headlight and the spotlights to run from a direct feed from the battery (the headlight feed wiring cant cope with the draw) Problem I got is that I want 1 spot light on with my low beam but then both spotlights on with my high beam but keeping the low beam feed to the headlight off I have attached a pictured of the wiring setup idea and need someone to point out how I could get the desired effect written above. Im guessing some sort of diode setup but would I need something special to cope with the amps? The spots only draw around 10w/0.9a but the headlight is 45w/3.75a Thanks in advance for any help

Almost... A dedicated relay for the hi/lo spot with a diode from each signal (hi +12V, low +12V) with line end towards the relay (86; 85 is GND). 30 & 87 as normal between power source (fused battery +12V) and target (the spot). Similarly - assuming too much load for the hi wiring - another relay for the hi spot; its 86 to hi +12V. The latter could also power the hi if relays aren't already used (if 2 semi-separate circuits are not desired). The OEM low remains as is, or its own 3rd relay if desired. The substitution of self-resetting circuit breakers instead of fuses and separation of power feeds (or signal bypassing) depends on redundancy & safety requirements.

The problem is, the low beam voltage to the lamp is removed when you switch to high-beams. When you key on, your headlamp LOW comes on with the ignition, right? So, Wire the first SPOT with the key-on for ignition, with a relay, so that is always on with the bike no matter what the headlamp status is. Thus, one spot and low beam is on at the headlamp. You can use any running light wire for that, like from the brake lamp LOW feed, which you should be able to get under the seat, or somewhere. Then, wire the second relay from the harness high-beam lead, to switch on the relay for the second spot, so when you select the high beam that spot comes on. So, the first spot will ALWAYS be on with the bike, always, and the other comes on only with the high-beam selection. BOOM, good to go...

My bad... a diode can similarly be added from the hi beam signal/power to the low-spot relay #86 with a diode from low beam signal/power to low-spot relay to prevent hi beam feeding the low beam.