| Business | Phone |
| General Control Systems 949 N Cataract Ave # H, San Dimas 91773 | (909) 592-2991 |
| Walterscheid Electric Co 150 W Bonita Ave, San Dimas 91773 | (909) 599-2321 |
| A & F Electric Inc 482 W Arrow Hwy # E, San Dimas 91773 | (909) 592-2906 |
| Affordable Electric 1034 W Arrow Hwy # 192, San Dimas 91773 | (909) 596-7800 |
| Andrews Electric 210 W Arrow Hwy, San Dimas 91773 | (909) 305-8665 |
| Andrews Electric 403 E Arrow Hwy # 307, San Dimas 91773 | (909) 305-1209 |
| Braley's Electric 535 W Allen Ave # 21, San Dimas 91773 | (909) 394-1116 |
| Brick's Electric 438 W Arrow Hwy # 28, San Dimas 91773 | (909) 592-3204 |
| Control Electric 1546 Avenida Verde Vis, San Dimas 91773 | (626) 332-5546 |
| Cruise Industrial 229 W Allen Ave, San Dimas 91773 | (909) 596-8337 |
| Golden Electric Contractors 760 E Foothill Blvd, San Dimas 91773 | (909) 449-8725 |
| Gorman R Dysthe Electrical 1449 Bentley Ct, San Dimas 91773 | (909) 599-8180 |
| In Control Systems 482 W Arrow Hwy # D, San Dimas 91773 | (909) 599-3385 |
| Joe Defazio Electrical Contrs 466 W Arrow Hwy, San Dimas 91773 | (909) 599-1361 |
| Paul Martin Electric San Dimas 91773 | (909) 394-5776 |
| Philcon Construction Inc 446 W Arrow Hwy # 20, San Dimas 91773 | (909) 394-1238 |
| R V Electric Co 924 N Cataract Ave, San Dimas 91773 | (909) 599-3494 |
| Riteway Electric San Dimas 91773 | (909) 599-0154 |
| S B Electric 446 W Arrow Hwy, San Dimas 91773 | (909) 762-5851 |
| Westpower Inc 417 W Allen Ave, San Dimas 91773 | (909) 592-1103 |
| Triple E Electrical Contractor San Dimas 91773 | (909) 599-7399 |
| Sullivan Electric San Dimas 91773 | (909) 599-2790 |