Many, many times OP's state they dont have a meter to check voltage or continuity as suggested by those who respond.

I guess the thought is a 'meter' is a very expensive critter.

THEY ARE NOT !

This meter from Harbor Freight is perfect for us.
Only requires a 9 volt battery which can last 2+ years with frequent use.

I grant the version that comes in a fairly soft rubber case doesnt break as often but at this price there is no need for ANY DIY'er to not have a meter.

http://www.harborfreight.com/7-function-digital-multimeter-90899.html


Whether you use HF or not is up to you. If you work on your MB, get one or at this price 2.

__________________
1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T

"If you dont have time to do it safely, you dont have time to do it"

"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."