BE VERY CAREFUL WORKING WITH THE POWER PACK, IT WILL GIVE YOU A JOLT FROM THE 200 + VOLTS AC ( I'VE READ IT CAN BE AS HIGH AS 330 VAC). I HAD SKATPAK REBUILD TWO POWER PACKS FOR MY 67 CHARGER. BUT EVEN WITH A GOOD POWER PAK, THERE ARE OTHER FACTORS THAT WILL PREVENT YOUR EL LIGHTS TO WORK. I ALSO HAD TO REPLACE MY HEADLIGHT SWITCH . FINALLY, THE WIRING FOR THE EL PASSES THROUGH THE FUEL GAUGE , WHICH IS THE LAST SOURCE OF THE PROBLEM AND REQUIRES THE REMOVAL OF THE GAUGE CLUSTER AND SENT TO SOMEONE LIKE SKATPAK TO REBUILD. JUST BE CAREFUL HANDLING THE POWER PACK.