Its been a long while since I posted on here but I've got some trouble starting so looking for some help please. I disconnect the battery when not using the car so I go to reconnect and the car always fires up first time, no issue. Then if I turn it off and try again I do not get any dashboard lights or power, the only thing lit is the air temp on the ac panel. When I move the key to the starting position everything goes dead, as if the immobiliser is kicking in (an aftermarket cobra system). The battery is decent at 12.55 volts. When in position two it drops to 12.48 v then when I try to crank and everything goes dark then it rises back to 12.55v. I've connected another battery for good measure and that made no difference. Could the battery have a duff cell? It doesn't feel like starter motor issues as it fires up on the first go, but nothing after that. I have to disconnect the battery, leave it overnight and then it will work again the following day. Even if I just get the dash lights working on the first attempt then don't crank, if I try again its dead. Any useful suggestions would be greatly appreciated as I'm trying to get her running for a local Jap show on Friday night! Its a 1993 UK auto car. Cheers Nick