| Absolute Audio Video | 815-395-1000 | 4225 Charles St | Rockford | IL | 61108 |
| Adc | 815-356-0114 | 1836 Somerfield Ln | Crystal Lake | IL | 60014 |
| Advanced Alarm Co | 815-385-0806 | 2417 Johnsburg Rd | Mc Henry | IL | 60050 |
| A-Fire Extinguisher Sales & Service | 815-961-8100 | 615 S 6th St | Rockford | IL | 61104 |
| Alarm Express | 815-932-7961 | 1995 S Schuyler Ave | Kankakee | IL | 60901 |
| Areawide Cellular | 815-469-7666 | 362 N La Grange Rd | Frankfort | IL | 60423 |
| Audio Installers | 815-969-7500 | 1502 N Main St | Rockford | IL | 61103 |
| Auto Crafts Incorporated | 815-726-7373 | 414 W Jefferson St | Joliet | IL | 60435 |
| Automatic Fire Systems Inc | 815-654-7449 | 7910 Burden Rd | Machesney Park | IL | 61115 |
| Big Sky Searchlights | 815-436-1409 | 17320 S Delia Ave | Plainfield | IL | 60544 |
| Bock Antenna & Satellite Inc | 815-282-3600 | 130 E Riverside Blvd | Loves Park | IL | 61111 |
| Burns International Security Services | 815-941-4411 | 7085 Highland Dr | Morris | IL | 60450 |
| Columbia Audio Video | 815-282-9200 | 1601 E Riverside Blvd | Loves Park | IL | 61111 |
| Dan-Car Sprinkler Co | 815-877-6004 | 11028 Raleigh Ct | Rockford | IL | 61100 |
| Dynamark Security Centers Inc | 815-434-7030 | 100 Lockren St | Ottawa | IL | 61350 |
| England Dans Car Audio & Cb | 815-937-5599 | 1035 Mulligan Dr | Bradley | IL | 60915 |
| Fire & Safety Equipment Of Rockford Inc | 815-394-0100 | 2420 Harrison Ave | Rockford | IL | 61108 |
| Guardian Services Inc | 815-469-4779 | 1111 Luther Ln | Frankfort | IL | 60423 |
| Kellenberger Auto Accessories Center | 815-544-2939 | 6365 Business Rte 20 E | Belvidere | IL | 61008 |
| Master Task | 815-968-5885 | 407 Green St | Rockford | IL | 61102 |
| Road Sounds | 815-725-4544 | 2366 N Plainfield Rd | Joliet | IL | 60435 |
| Sentinel Security Inc | 815-397-2586 | 5844 Elaine Dr | Rockford | IL | 61108 |
| Skywave Electronics | 815-961-1757 | 1205 N Horace Av | Rockford | IL | 61101 |
| Team Cellular | 815-337-8600 | 665 S Eastwood Dr | Woodstock | IL | 60098 |
| Video Master Inc | 815-485-7002 | 13318 W Lincoln Hwy | New Lenox | IL | 60451 |
| Ziebart-Tidy Car | 815-874-9518 | 3919 Sandy Hollow Rd | Rockford | IL | 61109 |
