The turn signal relay connects to a sub-harness that does the headlight, front turn signals, turn signal relay, etc.
I've attached a better quality wiring diagram which is useful if ya don't have it already.
Have also attached Guy's "simplified" wiring diagram as that it also useful. :-)
Boomer, what model is the schematic you attached? Euro post '94 ?
it isn't a USA model, as seen by the "city Light", the headlight switch that allows light to be turned off, and the "passing light switch"...
Not sure how much that is gonna help him, there appears to be a few differences, especially with the headlight system on a USA version " PRE -'94 " bike...
also I think Guy's simplified schema, is post '94 also...
He installed an '86 wire harness, which will not directly mate up with a '99 gauge cluster either...(not to mention the '99 cluster won't mount in an '86 fairing)
The addition of the "emergency headlight system" on pre '94 models adds even more issues when trying to "counteract/remove' that particular device. (i.e. it can't be taken out of the circuit without compensation.)