Sorry Ben, you are sooooo wrong on this occasion as the relay for a 300 is expecting to operate 3 x 21w bulbs and 1 x 5w (being the wing repeater) per side... if you wire the missing bulb holder together, you will blow the fuse... :doh:
I have a similar issue and hope that someone might add wisdom to my plight...
I have removed the original 300 rear bumper (and lights) and have fitted a heavy duty bumper which has some pretty (?) LED indicators and lights - these do not give correct resistance and therefore the indicators flash way too fast...
So - options...
Do I measure the resistance and then install a suitable ballast resistor each side to 'trick' the relay into thinking that it is firing the correct wattage of bulbs?
Would a 200 relay fit as a straight swap (logic being that this was originally intended to work with 2 x 21w and 1 x 5w per side) or are the fittings and connectors totally different?
Or... should I find a suitable standard light fitting that will surface mount to the HD bumper (and, no doubt, suffer terminal destruction every time I venture out....)
Wot u fink everyone???
Many thanks