Auto spark, ideally mobile

[FLAT 6]

I need a good old fashioned auto spark to have a look at a classic 911 with a few electrical gremlins. Ideally they would come out to me near Dromore.

I'd take it to Lisburn Car Electrics but the last time I used them they charged me to diagnose a fix which involved me buying an expensive part that didn't fix the problem.

Any recommendations?

Al.