By Steve Thompson
Progressive Farmer Contributing Editor

QUESTION: I recently bought aftermarket lights for our 7700 Ford. The old, original lights were working, but I was not able to see very well with them. I have a loader on the tractor, so last year I relocated the lights to the top of the windshield. Now they don't work unless I run two wires directly from the battery to the lights. I cannot get them to work going through the switch.

ANSWER: Get a test light and check for voltage from the wires coming from the switch. If one of them is not "hot," you need to figure out why you don't have power to the switch. If you have power to the switch but not after it, then you have a bad switch. If you have power to the light but it won't burn, you need to check for a bad ground. A bad ground or a bad connection fixes about 90% of all electrical problems.

© Copyright 2009 DTN. All rights reserved.