nypd aerotwin flasher question

[ukfedsigcollector]

hi,do the flashers on this bar all flash together or alternate,left to right as ive just had one delivered,although the domes were smashed,and they appear to all flash not alternate.


i have taken pics as its in a terrible state,and will referb now and post before/after pics. ordered new domes today at a cost of £200.00 ouch..!thanks for your help..problem with living in the u.k. all the parts cost fortunes.

 

[NPS Ranger]

They alternated L/R using a 537 or similar flasher which plugged into a socket on the chassis.

 

[ukfedsigcollector]

i have the flasher and the plug,it seems they were wired into one side as the plastic socket is heat melted down ine side..thanks for your help..