RV Repair: Suburban Furnace, suburban furnace, tooele utah

Question
QUESTION: I was cleaning Suburban Frnace model# NT24S.......the wires were not wire-nutted together tight... the wires came apart.      I have 1 black and 1 white Incoming power........1 red and 1 white thermostat wires and the wires to the furnace are 2 blue ...1 red....1 yellow.   

Could you please tell me how they should be wired.......There was originally 3 separate connections......But while cleaning the wires came undone from wire nuts.......

Also original problem started with an old thermostat....I changed with a universal from a RV supply company.....Furnace would start (Light) about every 4th try...then go out and not start again until I shut off and started over after a 5 minute wait..will not cycle on off as supposed to....any help would be greatly appreciated thank you for your time

Wayne alldredge
1224 Haylie lane
Tooele , Utah  84074

Furnace: Suburban
Model # :  NT 24S
Code # :  BGV K
Manifold Pressure :   10 0
Input BTU :  24000
Orifice Size:  54
Serial # :  1641313

Wires Involved

Incoming (main)  1 Black
         1 White

Thermostat :  1 Red
         1 White

Furnace Wires:  2 Blue (does it matter which blue one when connecting)
         1 red
         1 Yellow


ANSWER: Wayne, This is simple. There will be 4 wires that need to be connected. The red wire from the furnace is the positive 12 volt wire, the yellow wire is the negative 12 volt wire, the 2 blue wires go to the thermostat and it doesn't matter which way they are connected. The T-Stat only completes the circuit. Your incoming main goes to the red and the white to the yellow and so on. I hope that this helps, Bill

---------- FOLLOW-UP ----------

QUESTION: How does thermostat get power if not at least one wire is tied to Furnace + 12 volt power... Such as

1 Red + 12v to 1 Blue to + 12v to 1 +12v Main Black to 1 thermostat wire.

Maybe I'm putting to much in to this............But I originally thought there was only 3 connections on this furnace.
I thought maybe it was wired as follows:

Main Black +12v to Furnace Red +12V to 1 Blue/Module and 1 thermostat wire

Then

Main -12v White wire  to  Furnace -12v Yellow wire

Last

1 Blue module wire to the other thermostat wire

Sorry for being such a pest........Again Thank You

Answer
Wayne, If you look at the plug that goes into the furnace you will note that there are only 3 connections. One of the three have 2 wires coming from it. The red is 12+ and the blue is also 12+ but it hooks to the thermostat. I guess you could hook them all together but it is better to do it the right way if you are going to do it at all. Thanks again, Bill