That's half the fun. Figuring out electrical problems. Easily solved during a rebuild or restoration. Moss Motors in Kansas supplies dependable new wiring harnesses. I remember the old BSA's and Triumphs I rode. Never went anywhere without tinfoil, fuses, solder, etc. Always knew if I hit rain, something was going to get wet and fail. The MGB eternally mounted fuel pumps were famous for failing if you went through a heavy rain fall. I I like the LBC's (little British cars) because they were cheap to buy and restore. Very simple to work on. No computers, they had points and condensers, etc. Carbs were always a problem to keep in tune but I usually replaced them with a NA made Webber. I liked the cars for their handling and intimacy. You felt like you were a part of the car. Preferred the TR-6. It had 150 HP engine and independent rear suspension. With an Abarth sports exhaust, it had one sweet sound. Actually seen the TR's with Ford 289 V8's transplanted in them. Real sleepers! With a good axle they could blow the doors off some Vettes.