is the power wire. It should be connected to a 12 volt keyed ignition source at the power distri-bution box. When connecting to power, the source must be able to handle a 7.5 amp continuous draw. Index recommends installing a dedicated circuit breaker for the APAds control module. If needed, a ring terminal and heat shrink have been provided for. The APADS control system is composed of an electronic control module (CM-813), two "semi-smart" pressure switches and a conventional evaporator thermostat (TSTAT).
CLICK HERE for the APADS module diagnostic sheet with wiring diagram so that the APADS can be checked to make sure it is working first. if it doesn't work, the whole gas side of the AC system will not work.. Ok, read diagram. Ran jumper wire for 301-A to terminal D on APADS control module. System ran for around 5 minutes, then lost ground again on terminal D. APADS module still slow green blink, system not working. No ground at compressor. If I put wire 301-A on a constant ground will system work properly and not freeze up? New APADS control module.