[Steve]

With the great help of Jim (NoDrama43) I now have an NOS Unitrol M131 Wig-Wag Flasher unit for 0327. I had one from 0204 but it was original and had seen better days. And I did not have any instructions on how to connect it. I had even called Federal Signal Corp. (Federal acquired Unitrol's parent, Dunnbar-Nunn, some time ago) technical support for information, but they were unable to help.

Along with the NOS unit came installation instructions with a wiring diagram. I spent a couple of hours today figuring out how this unit wired into 0327's headlight circuit. I found where the wiring harness had been opened up near the master brake cylinder, and where it had been opened right below where the wig wag flasher had been installed on the left side of the engine bay just in front of the shock tower. It was obvious Motor Transport had cut the wires and spliced in the flasher in those two places, reconnecting the cut wires upon decommissioning.

It didn't take long to figure out which splice was for which high beam side; the RH was near the firewall. the one for the LH was near the wig wag flasher. One more wire, +12V from the WW terminal on the back of the CC1 completes the circuit.

I'll post all photos and more details when I have it installed, wired and working, but for now, and for future restorers, I am posting the installation instruction page in jpeg and pdf formats.

The wire I ordered came in so next step is to build some harnesses.