This is the multimeter I have can you guys tell me how to set it up to test the output for 12 V DC as suggested by Smokey?
http://www.ebay.com/itm/GB-INSTRUMENTS-GMT-312-ELECTRIC-MULTI-TEST-METER-/160883862477
http://www.ebay.com/itm/GB-INSTRUMENTS-GMT-312-ELECTRIC-MULTI-TEST-METER-/160883862477