Just to test I swopped out the coil and reinstated the relay circuits. On a test run the problem with hesitation and stalling returned. Again put back to the bodge with a switch running g off the battery and runs fine. So: O it's not coil O it's not fuel pump (hopefully) O assume it's not ht, plugs as it runs fine with bodge It could be that just connecting anything to the coil disturbs the electronic ignition, or that coil cannot supply enough power for pump. At the moment we're going to the using the bodge to get us home. It's only 700 miles or so.