'94 sl2 electrical problem

I have a1994 SL2 that occasionally, now more and more frequently, has a strange problem. Car usually starts fine after sitting overnight, but after being driven for even a couple of minutes and turned off will not restart. Initially nothing gets power as if the battery is dead, but after a few seconds the hazard, brake, and dash lights flash, even if not switched on and with no key in the ignition, but no power to starter or anything else. After waiting several minutes to an hour the lights stop blinking and everything works as normal and car starts and runs fine until turned off. Note, this happens more frequently during the summer.

Bad ground or bad contact at the battery. Check them all and make sure they are corrosion free.

Also replace your ECTS (with the two wire connector)

Will do. Thank you for the response/advice RC1488.
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