Burgman 400 2007 no start-any help will be much appreciated

Suzuki Burgman 400 K7 was neglected out in the weather for years.
All body panels were removed by the owner as he wanted to paint it never found the time.
lucky me I bought it very cheap not realizing what I was getting into.
so far tried to put all the panels on to make sure i got everything and I found a few pieces missing .
all the rubber floorboards, the center dash piece and top long piece with Suzuki logo, also the complete throttle body,
bought all the parts from the UK and yes was bought used, couldn't find any parts here in Australia.
didn't realize how expensive parts are at the time but it cost me more than what I paid for the whole bike.
so my budget is gone.
so the next thing I did was paint the frame on the bike as surface rust was getting pretty bad.
got a new battery and turned the engine over without the sparkplug dropped a few drops of oil in cylinder.
let it crank for 1 minute checked compression was pretty good 105psi this bike has done 20,000kms.
The next thing checked for spark it was giving me 1 spark and nothing else.
cleaned every connector, the cluster is showing F1 and the throttle body the 1st butterfly keeps moving- opening and closing constantly,i think I need to adjust tps ,
The next thing I did the dealers mode it gave me 2 codes c41 c21 fixed both c41 was bad fuel pump relay-replaced it
c21 was air filter sensor just needed it to plug it in no more codes C00 but once i remove dealer mode I get F1
now still can't work out the spark issue,
my question is the relay next to the fuel pump relay, is that the handbrake-side stand relay?
if yes if this relay is bad can't it cause the spark issue?
also, does the seat switch light can it cause a spark issue if the seat is up?
thanks any help