Durite 0-534-05 Dual Voltmeter, RATING:6-60VDC, Size of Hole: F 29.0mm diameter - 12-48V £22.79 Compare Quick Shop
Durite 0-834-10 In Line Diode with 6.3mm Blade/Spade Terminals 10amp 12-24v DC £2.84 Compare Quick Shop
Guardian PCH Red Anderson High Current Connector Handle For 175/350 Amp Plug £5.76 Compare Quick Shop