2002 LXi - NO POWER TO DC AUX AIR COMPRESSOR

[dmbertrand]

All

1. My understanding is the DC source is simply from the house battery bank to a distribution panel, fused (both fuse number & panel location unknown to me) with no "on" / "off" switch but controlled by the 2nd pressure switch next to 110 VAC aux air pressure switch.

2. When purchased DC compressor was missing but wires appeared to be there. With bus DC system on, NO air pressure on bus air system and 110 VAC compressor OFF at breaker panel and NO pressure in small aux air tank cannot detect 12 VDC at wires or pressure switch.

3. Is my understanding correct and if so does anyone know the panel location and fuse number or can you expand on troubleshooting procedure.

All replies appreciated.

Dean