8-head LED flasher question

[firefighter221]

I have a 8 head SVP ULB24 interior lightbar. I’d like to rewire it so that it can flash similar patterns to a Liberty or Edge.

Currently it’s configured
A B A B - B A B A

I’d like to change it to

A B C D - D C B A

So that each matched pair can do an alternating pattern, such as SignalAlert. What’s the best way to accomplish this?

 

[Abacus]

Whelen Ulf44 would be cheapest and you put 2 heads onto each of the 4 outputs and rewire the svp Leds back to the flasher. All subject to the Svps playing nicely with whelen flashers. Some products historically don't work with the ulf44.

 

[shues]

I concur. The ULF44 is a solid choice.

 

[NoLimitSquads]

Another vote for a ULF44. Another bonus of them is that they feature a pattern override, so you can set two different flash patterns to the same flasher.

 

[Jmontes91]

Can you connect a momentary rocker switch to the pattern override stud 3 to control the scanlock function?

 

[Abacus]

Yes the SL input on the ulf44 is 12v + so the momentary switch will work.

 

[Jmontes91]

And with sync will that change the flash pattern for all connected light?

 

[KS-15676]

And with sync will that change the flash pattern for all connected light?

Yeah, all four outlets on the ULF44 flash with the same patterns.

Here are the instructions. Take a look at the bottom right of the first page for the flash pattern table.

 

[Jmontes91]

In my series 600 lights and 300s the scanlock wires on the grill and wheel well look cut. Do I run new wiring and recounted them or???

 

[Jmontes91]

Ok I think I understand. Last question for the
4 Sync wires all on stud 5 might be a little crowded no?

 

[Abacus]

The sync tab is to connect to another flasher so that the two talk to each other and you get the same flash patterns but for only certain of the flash patter. The output of the flasher is done on the four tabs on the right. The led heads need to be either dumb heads or locked to a steady burn pattern. The whelen instruction sheet is very helpful.

 

[Abacus]

Edit. You can use the sync tab for phase 1 with other heads but to add additional LEDs I would piggy back each of the main 4 outputs rather . I run 6 heads in total without an issue with all 4 whelen and 2 axixtechs working well together.

 

[shues]

In my series 600 lights and 300s the scanlock wires on the grill and wheel well look cut. Do I run new wiring and recounted them or???

If you use an external flasher like the ULF44, you will use only two wires for each lighthead: power and ground. Each lighthead will need its own power wire run back to the ULF44. Ground wires can be local.