might not make any sense,but also verify the ratings of the bulbs,especially aftermarket.when replacing some indicators with fancy leds,they dont register pulse without the use of flasher relays.good luck with the twin.might be time to buy a tester and run ratings of all bulbs ,car on ,car off,futher from battery to closer.know sounds wild but certain situations call for such actions.any electrical wise circut guy in new jersey charges 150 dollars to show up and 85 an hour after ,with a minimum 3 hour call.