Here's a tip to convert your corner lights to blinkers.
First, get Ford 1157 sockets with a ground tap and use a dremel tool to make the opening bigger. Next, slap in the 1157 socket and secure all around it with silicon sealant. Tap the hi current (blinker) to the bumper light's power wire with T taps, then tap the steady to the original parking lights that were existing in the corners.
Ground the tab and you have useful blinking corners.