I am trying to get a liberty 54" lightbar to work. I have programmed a brand new WEcan module but I get nothing when I put the green wire to 12 volts. All the light heads have 12 volts all the time but I do not have continuity in the ground
Whelen 2009 Liberty lightbar with WECAN
- Thread starter Fireman_c
- Start date
NoLimitSquads
Member
What green wire are you putting power to?
Did you program the control point? Or are you using default programming?
Power and ground to light bar?
The WeCan wires are hooked to the lightbar correctly? Green to green, and grey to grey?
Did you program the control point? Or are you using default programming?
Power and ground to light bar?
The WeCan wires are hooked to the lightbar correctly? Green to green, and grey to grey?
I have programmed the WeCan controller in everyway possible. Gray to Gray Green to Blue
ffjwhite
Member
If its a true wecan it should be gray to gray and green to green. Just to make sure, you have 2 wire harness from the bar? 4 wires in total?
The 3 wire control wire coming from the bar is gray, blue and shield. The bar is a Liberty SW2RRRR
tsquale
Lifetime VIP Donor
If I'm not mistaken, having a blue wire indicates it is a Serial Control bar and not a WECAN control bar.
NoLimitSquads
Member
Yea, Im thinking its an old B-Link. Unless somebody re-wired it. WeCan is Grey, Shield, and Green.
Whats the date code on that bar?
So I need a Whelen SC Controller For MPC03? Or something else. The bar was manufactured in 2009
RS485
Supporting Donor
You should probably open the lightbar up and verify what I/O board it has and go from there.
If it is WeCan, you might want to check out this thread -- some folks had problems using newer "Command" with older lightbars and the posted .BXR file seemed to help.
If it is WeCan, you might want to check out this thread -- some folks had problems using newer "Command" with older lightbars and the posted .BXR file seemed to help.
NoLimitSquads
Member
Like stated above, figure out for sure what board is in it. If its B-Link, I can’t help you, that was before my time in this industry. However, Im sure there are some B-Link pros in here.
RS485
Supporting Donor
That would explain why it doesn't work
You can either go the SC route:
1. MPCxx controller
2. USB->RS485 cable (just a USB cable if MPC03)
3. programming software ( See "Serial Communication Programmer" here -- also see this post for a tip on how to get it working on modern Windows )
There is a listing on eBay right now for someone who'll sell you an MPC01 and include programming FWIW
-OR-
Maybe replace the SC board with a WeCan board. Other folks here can probably make the best recommendation with respect to the most suitable board and what it entails (may need wiring harness).
Last edited:
Other than a new power cable can I use the existing 12 pin cable that feeds all the lightheads? There are two of those in this bar. One for front heads, one for rear heads.That would explain why it doesn't work
You can either go the SC route:
1. MPCxx controller
2. USB->RS485 cable (just a USB cable if MPC03)
3. programming software ( See "Serial Communication Programmer" here -- also see this post for a tip on how to get it working on modern Windows )
There is a listing on eBay right now for someone who'll sell you an MPC01 and include programming FWIW
-OR-
Maybe replace the SC board with a WeCan board. Other folks here can probably make the best recommendation with respect to the most suitable board and what it entails (may need wiring harness).
RS485
Supporting Donor
If I understand you right, you're talking about the harnesses which go between a group of six heads, and a port on the SC I/O board. The corner modules have their own eight-contact plug in there too.
I think you'd be better off replacing the SC I/O board with an "LC" (Low-Current) I/O board (and possibly harnesses).
Connecting directly to the LED heads is outside of my experience so I can't recommend it.
So I ordered a LC Liberty I/O Assembly. Does anyone have a link to the wiring diagram for that assembly?
JohnMarcson
Administrator