to get the correct title you should just have to sign it, WI doesn't care about fuel type, if the DMV is confused they will call you, trust me.
I haven't owned my c-car thru the winter yet, my comuta-car has the newer doors with real glass windows that seal, the citicar I have has the side curtains that I plan to replace with ridged plastic windows when I get that far on the body.
LED's work really well in these cars, I got the brightest I could from
SUPER BRIGHT LEDS home and am pleased.
the E-brake is a bad design and there is no way around it without a ugy hack job, the best option is if the cables are all there, take them off straighten out any kinks, and fill them full of bike cable lube, to get the cable out of the park brake handle there is a pin in the handle that you drive out then the shaft can slide forward, but you shouldn't need to do this to lube them, just if that shaft is binding.
I'm working on a design for linkage that does away with the first cable that tends to be the problem but have not worked out all the space issues yet.
as for lights check the fuses to see if you are getting power to the fuse block, the key does not have to be on for the lights to come on, but I imagine that you have some kind of 12v power supply that must be working if the relays work??? or is forward reverse in the curtis controller?? but yes, start with good bulbs, and check the ground wires too!