That is the VERY early 500 and is difficult to get because of the round pin connectors.
The complete loom with panel will fit from a later one with the spade connectors--no need to change bar or ignition switches nor any other bits
The complete loom and panel from a 550 will also fit but you need to make minor mods to some items, if you get one of those PM me and I will tell you what mods to make