Base dun sa drawing...mukhang tama, puede rin 2 splice, yun nga lang pangit maraming splices dun sa orange wire...masisira ang integrity ng wiring pag masyadong maraming splice tapos pangit ang pang cover mo dun sa inisplice mo (electrical tape looses its dikit sa katagalan or exposure to water). Minsan dun nagsisimula ang connection problems kasi in the future.

on other matter

Btw, what's the orange wire for? Na weirdohan kasi ako sa wiring diagram (my assumption is that you're installing a fog lamp switch, relay for the fog lamps and perhaps a pair of fog lamps). Para kasing mali...(but I could be wrong too)...unless iba yung relay mo....

IMO.... IF THE ORANGE WIRE is some sort of a 12v line (with low amp drive) from the fuse box, the splice connects to the foglight switch (green-red) and then the other end of the switch (yellow-blue in your diagram) will be connected to the other end of the relay (IF THE RELAY IS THE TYPICAL BOSCH which have this 4 prongs underneath) and not to the ground (as per diagram). Then dun pa lang papunta ng ground yung ka partner na probe ng relay. So bale hindi naka konek ang relay ng direct sa orange wire but rather via the switch. The remaining two other probes ng relay connects the direct link of the fog lights to the battery and the body ground.

Sana hindi ako nakagulo lalo.

just my 2 cents.