I have a 77 XLH my turn signals will not work when hooked to the light, but work fine on a test light, I checked them with another Known working light No Go, I installed a new speedo and just before wiring it up I tried the signals on the back light, It flashed just fine. They just won't work on a turn light I checked and double checked all wires and tried them coming straight out of the plug. No Go.The volts check out fine with a multimeter, I am completely stumped.All other brake running lights work fine ..Any thoughts..
Thanks, Dan