Cheryl,
Ask a fellow camper to help you with your fuses issues. Most know something about fuses as simple as that is if they have been RV owners for a length of time. Believe me, it's not rocket science and then you will know also. You cannot get a shock from 12 volt DC.
Be sure to take the bulb out of the socket that gave you problems as it may be shorted out and will simply blow the new fuse too. Again, it's only 12 volts and it would never hurt you nor could you even feel and current if you were to touch bare wires so don't worry about getting a shock. Also will let you see if the bulb base or socket is black or discolored from having shorted out. If so, they are so easy to replace cheaply as there's only 4 to 6 screws holding it on and the wires have finger turn on plactic wire nuts.
I do not know how much you know or understand about DC circuit current flow so starting with the basics.
First, write down which color wires goes from the fixture and connects to which color, IE, black to black or red to black which is positive current as some differ in colors used in your RV era. White to white which is normally the ground (negative current). Yours should be blac to black and white to white and that will be the correct polarity. Because some of the old RV interior fixtures had red for positive and black for the ground in the past as the same fixture was used in boat/marine cabins lighting is why I mention this. With the old fixtures which have a red and a black wires. Red is + (positive) and black is - (negative or ground) as they were also used in boat etc cabins. Identify what yours are and you will have no problems with proper polarity connecting.
Your RV of that age should have 1156 incandescent bulbs in the interior lights which is a single filament high current draw and the bulb really gets hot when on. The center of the bulb base should have a single fairly smooth bump lead contact and it's the positive current contact. The metal barrel shape of the bulb base that has the little pins sticking out the sides to keep the bulb in when turned in the socket is the negative current side contact. Do not use a bulb in your socket that has 2 bottom lead contacts (1157 bulb) as it has 2 filaments and is for tail lights. One for running lights and one for stop and turn signal lights.
The positive wire colors can be confusing to some as in RV's etc, the coach wiring is usually black for the positive side and white for the negative side (the ground) like in home wiring AC circuits in which black is the hot wire and white is the ground. RV manufacturers usually with their coaches like homes as to wire colors for both DC and AC electrical circuits but you are only dealing with 12 volt DC wires. Most other DC (Direct Current) electronic/electrical circuits the positive is red and the negative is black such as in vehicles boats, batteries, etc. The confusion is because of mixing coaches that are lived in like homes is blended with the age old normal 12 volt DC side of life standards/specifications. That is why you must pay attention to how it's wired for colors presently especially if you want to replace the high amp draw incandescent bulbs with LED's which consume approx. 1/7th of the same current for the same lumens of light output. Many of the LEDs are polarity sensitive and won't work if current flow is backward.
A superb CC LB 4X4, GM HD Diesel, airbags, Rancho's, lots more
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A like new '07 Sunline Solaris 26' TT
