just check it with a multimeter at the battery
remember
10volts or more when cranking
13.4 volts or more while running (means altenator ok)

double wiring the altenator is something you do when the wiring has been fried or is rusty or dodgy like a high resistance and is a bandaid fix

need to check voltage at the battery while starting car with a multimeter

just check voltage at the battery doesnt go below 10volts while its starting
if it does try jumpstarting the car and see if it still drops below 10volts

if it drops below 10volts battery is normally dead or not charging
on c'dores when the battery is good and trying a new battery doesnt
fix it i would replace the starter motor for a slow crank as they wear out
and use too much electricity looking like a flat battery

woops guess they are there forever shamed?

lol "forced" doesnt sound very good LOL

lol i just bought my new tailights for vt now i have to re-wire my reverse light to suit the vx style tailights :(
haines/haynes/whocares is more mechanical than cosmetic will have bulbs in there buyt not the tailights may have the dash unsure though
is a little in depth to pull cluster out you will need some patience just rember if you have to force it it isnt the right way of doing it ;)

the dash ones oh shitttttt soz
the dash bulbs mean you have to pull out the instrument cluster
then on the back of the cluster there will be the back of.. 3 or 4 bulbs sticking out
you twist them gentley and they come out then you replace them
sorry had to conversations going at once one on tailights and one on dash :(

hey man replacing the globes is easy
if you go leds for indicator bulbs sometimes you have issues but other wise ok
if you go leds for indicators you have to check if they are compatible
e.g. ask the seller if you need anything else to fit them