The old battery should have the type written on the label under all the crud that has built up over the years.
A CMOS to power the BIOS chip
Your Honda Prelude might not start because of a dead battery or an empty gas tank. It may also not start due to a damaged starter or a battery that is disconnected.
under the battery
Depends, I know they have 2.0 and 2.1 for the 91 prelude.
Anyplace that sells batteries can tell you the correct size battery to install.
A few causes that will make the Battery Light come on are: 1. Faulty Battery 2. Loose Battery Connection 3. Battery is not Charging, ie. Faulty Alternator
Anyplace that sells batteries can tell you the correct size to purchase.
Preferably, as the 4th (and 5th generation for that matter) Honda Preludes are fuel-injected, it's suggested that they take in 91 octane or higher.
It's hard to say, as the question didn't specify what kind of solenoid are you attempting to fit, and the 1990 Prelude had a mid-cycle refresh which included an improved motor.
Positive+ (RED) goes to positive + on battery. Negative - (Black) goes to negative - on battery.
Dot 3 or Dot 4
bad wiring harnest