Underhood Wiring problems of the 1998 Ford E-350

I believe the events leading to the failure in my motor home started with the first recall (sept. 2007)that said that a fuse-able link had to be installed in the brake system to prevent a possible fire hazard. I complied. Shortly there after my abs light started blinking on and off irregularly. Then after a very few miles it stayed on all the time the engine was running. I called the dealer where the recall was performed and they said that the abs had nothing to do with the recall issue . That my brakes would still work, that the abs just effects the none skid prevention in slippery conditions. We took the motor home on a trip to birmingham, (about 100 miles) during the thanksgiving holiday. On 11-24-07 while leaving the campgrounds at about 20 mph the engine quit like you turned off the key. A minor inspection indicated the main power fuse to the computer had blown. . I had a wrecker tow the motor home to a dealership. The following Monday morning I contacted the service center and told them what had happened, they checked it out and called me and said that a very expensive wiring harness had was shorted out by a O2 sensor and it would cost around $1750. 00 to fix it. I said ok, fix it. After the repairs were done I brought it home and haven't used it sense. In February 2008 I got another recall notice that the part they put in my motor home in the previous recall was not compatible with my system and could cause a fire at any time and it was important that it be changed as soon as possible. I complied. My question and concern is can I trust this 1998 Ford f350 on the road. Also I am retired on a fixed income and I don't think I shouldn't be expected to bare the cost of an obvious automobile manufacture screw up. My motor home had around 25,000 miles on it when all this happened.