Just doing a little research for a possible foglight/front turn signal delete on my Sky and came across this post . . . never knew about this even though I was aware of the relay and non-relay/easy mod.Not being a big fan of just splicing together electrical systems I don't have schematics for, I went the route of relays and blocking diodes to prevent cross-feeding and back-feeding voltages.
Here is the diagram. Works like a charm. Be certain to insulate all of your splicing. I tie-wrapped together and then covered with electrical tape the pairs of relays. On the frame behind the headlights there is a convenient hole already drilled in the sheet metal. Use a stainless bolt, nut and washers to hard-mound the relay pairs.
When in daylight the side marker and front turn lamp flash together. When in night the side marker and front turn lamp alternate. Wife was skeptical until I showed her the results after dark. Now she realizes the Solstice is more visible (particularly ours, which is black)
I think if done this way, you could have and LED 194 light in the side marker, and a 3157/4157 style LED in the front and it would still work as a result of the added diodes.