I put in all new glow plugs and , When i turn key on and monitor voltage I get +12 vdc without the main power connected at the http://rd.bizrate.com/rd?t=http%3A%2F%2Fwww.lampsplus.com%2Fproducts%2Fchandeliers%2Ftype_pendant%2F%3Fsfp%3DX6786-9M881%26cm_mmc%3DBIZR-SH-_-PPC-_-Chandeliers-_-X6786-9M881%26sourceid%3DDFBZRX6786-9M881&mid=31047&cat_id=8445&atom=8451&prod_id=&oid=6883398602&pos=1&b_id=18&bid_type=10&bamt=cfbf9532e1e82faa&cobrand=1&ppr=36e5c7a5e97fe464&af_sid=58&mpid=X6786-9M881&keyword=glow%20plugs&rf=af1&af_assettype_id=10&af_creative_id=2975&af_id=615103&af_placement_id=1 I get +12 volts, my has 2 automotive 100 amp relays , 1 for air heater and 1 for http://rd.bizrate.com/rd?t=http%3A%2F%2Fwww.lampsplus.com%2Fproducts%2Fchandeliers%2Ftype_pendant%2F%3Fsfp%3DX6786-9M881%26cm_mmc%3DBIZR-SH-_-PPC-_-Chandeliers-_-X6786-9M881%26sourceid%3DDFBZRX6786-9M881&mid=31047&cat_id=8445&atom=8451&prod_id=&oid=6883398602&pos=1&b_id=18&bid_type=10&bamt=cfbf9532e1e82faa&cobrand=1&ppr=36e5c7a5e97fe464&af_sid=58&mpid=X6786-9M881&keyword=glow%20plugs&rf=af1&af_assettype_id=10&af_creative_id=2975&af_id=615103&af_placement_id=1. When I connect main power from glow plugs to controller I turn on key and 0 volts, dont even get a microsecond of any kind of voltage. I suppose I could pull controller and swap relays but right now Im confused. I was told the air heater is temperature dependant, I have my truck in a heated shop, set to 50 degrees. I also was told the glow plugs are not temp dependant. ? but I also read where the voltage should come on for at least 2 seconds. I know theres a wire C51? that goes back to . is this used just to throw a code if no voltage or other ? Any advise greatly !! appreciated.
MGM