Have you discovered your new PocketWizard won’t trigger your older flash? The Plus III and PlusX radios will trigger virtually any flash on the market but they do need the right polarity. Most strobes are wired the same but there are a few that are known to be wired backwards from the industry standard, specifically some Speedotron models as well as some Interfit radios. The MMRP is a simple adapter that reverses polarity to solve the issue of a flash that has been wired backwards.
For using a PocketWizard radio with a strobe that has been wired backwards from the industry standard. Connects PocketWizard to sync cable and reverses polarity for proper connection.
From: female 1/8″ (3.5 mm) mono miniphone to 1/8″ (3.5 mm) mono miniphone. (polarity reversed)
Cable length: 8″ (21 cm)