I use an old speedometer cable or a piece of weedeater cord as a fish tape. Once you get it threaded through the A pillar, tape the wires to one end of the fish tape and GENTLY pull it through. a little slippery stuff on the wires like Vaseline or Crisco helps.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!