MSR50/100 based remotes wire to SL2000
| SL2000 | MSR50/100 |
| 20 | C+ |
| 1 | T/R |
| 2 | P+ |
| 12 | AL+ |
| 19 | C- |
| 4 | TB+ |
If wiring is correct, check for shorted or open circuit wires pulled from detector to the remote. Multimeter can be used to continuity test wires if disconnected from detector and remote and twisted together in pairs.