| Do these kits plug straight in to sockets on the loom?
As for using the front ones as indicators aswell as side light, I can only see two options.
These are assuming the lights are 5w bulbs.
1> Use a relay system to knock out the side light feed to the light and let feed of the flashing indicator circuit.
2> Use a two filament bulb, like a side(5w)/brake(21w) bulb. Lots of American spec cars use these at the front like on BMW's etc... They usually have amber side lights on the front so they use the indicators with a two filament bulb. However, these bulbs baybe too big for the fitting but you may find a smaller LED alternative.
Just some ideas... | 
