As the summer is approaching i'd get the cossie out to play

. But i seem to have a weird brake issue. I've not taken the cossie out since early on in the year. Due to bad weather conditions. When i push the break pedal its really tough, when you drive the car you have to push it quite heavy to stop. Its not got the same bite as normal. I have new recon rear calipers on the back from burtons, and have hi-spec monster front break's, i overhalled the hi-specs in the summer last year, with new pads and recond my rear's about the same time with new pads.
What i'd like to ask, Can air get into the breaking system, im goona try bleeding them tomorrow. Also how can i check my break servo is working. Could that be a problem.
When i release my handbreak the light on the dash stays on. Along with the ABS light staying on.
Ive been told it could be a relay, does anyone know where thats situated?
Also I do not have any diagrams or descriptions of where the fuses and relays are in the Cossie, is there any where I can get them for future reference? I have the cossie manual but that don’t say anything.
Many thanks in advance
Andy