My Electrics need dire attention, I have no temp gauge, no blower now and a flickery hazard light which I think is dodgy switch and some LEDs to wire in...and dare I say it a intermittent fuel pump issue..thats now going to worry me until I do something about it

I need an idiots guide to Electrics to sort things out...and a multimeter, they only are a fiver on ebay...worth a purchase and a crack at it ?
