Recreational Vehicle Lpg Tank Valve/gauge problems of the 2003 Ford Windstar

The abs light has been one for quite some time many months, maybe a year. The brake light intermittently been on or gone off, but has been on for some time - the last 6-8 months. We have a known brake oil leak, as we have seen the puddles and frequently refill it. This is very similar to the Ford recall 09s09 but our VIN # is not presently included. On 8/21 the all of the internal gauges "went wonky" and then stopped indicating anything (speedometer at 0, even though I was driving down the highway at 50-60 mph. This "wonky issue" has been present since the spring of 2014. Also, the cruise control has not worked for a few months (about the same time we first noticed the "wonky gauges" which used to always accompany a rapid acceleration) since the last week, the gauges are "going wonky" on their own, even when I don't rapidly accelerate. We have read online about a brake oil leak affecting the scds and our issues seem very similar to those described in a recall! to recap, the "wonky gauges" have been an issue since Feb/March but was only observed when depressing the gas pedal. Now, since a much more severe episode on 8/21/2014 the gauges are acting up even at slower speeds, the gauges are "going out" and not registering anything at all for 10-15 minute stretches. A/c, radio, clock, windows, turn signals stop working. And abs/brake lights are illuminated. Thank you for your consideration!.