see below https://www.landyzone.co.uk/land-rover/britpart-parallel-glow-plug-kit.392964/

see attached just moved from the waiting for death capital(Torquay ) to where people are happy to see you Bulkington and soon to be re-knighted with my trusty series 1 ,hence the lack of reply's

try https://www.landyzone.co.uk/land-rover/series-2a-wiring.380658/

may be wrong but do you not have to measure the piston protrusion to determine the right thickness head gasket to fit I would check https://www.youtube.com/@Vera_and_Christian

I would personally measure the bore before assuming they are standard ,if you have the old rings you could fit one and measure the gap to see if using the same is in tolerance and feasible or if remedial work is required .guessing can be expensive

is it fitted with a trailer socket has the screen leaked recently (headers) ,dim dip relay ,column switch checked etc etc more info please

wiring reference if needed

I would attach the wiring away from the belt pulley

see https://www.landyzone.co.uk/land-rover/td5-disco-2-maf-and-ambient-air-temp-sensor.365120/

TRY

may be of help

Try

TRY

may help

just because it shiny and new does not mean it's working ( could be a Chinese interment camp rebelling against the lose of body organs )

TRY https://www.scparts.co.uk/en/land-rover/land-rover-90-110-and-defender-1983-2006/body-panels/vehicle-cab-back-panel-and-floor-panels/

try ORA https://www.repco.com.au/parts-service/driveline/centre-bearings/ora-free-wheeling-hub-suits-hzj105-78-79-series-ora-901s/p/A8784119

try

try your pocket then we will all be safer

as the screen leaked check headers for water and corrosion the head un plugs to check them but care is required when re-inserting