| Business | Phone |
| Leeds Electronics Inc 33966 W 8 Mile Rd, Farmington 48335 | (248) 888-1420 |
| Radio Shack 32436 Grand River Ave, Farmington 48336 | (248) 471-4050 |
| Promise Mobile Electronics Inc 35630 Grand River Ave, Farmington 48335 | (248) 476-6144 |
| Philips Automotive Electronics 34119 W 12 Mile Rd, Farmington 48331 | (248) 553-6030 |
| Philips Componets 34119 W 12 Mile Rd 104, Farmington 48331 | (248) 553-6095 |