Diode trio needed for alternator

[Sparkrite]

My ignition light doesn't come on unless I ground it and a quuck ohms test points to the alternator diode. I would like to keep my original delco remy alternator on my tcs and need to find someone who sells the diode trio here in the UK.
Any suggestions appreciated.

[jbcollier]

https://www.scparts.co.uk/sc_en/british-cars/triumph/triumph-spitfire-mkiii-mkiv-and-1500-1967-1980/electrics-ignition-system-heating-and-dashboard/alternator-delco-remy-dn460-optional-fitment-for-pre-1973-mk4-models.html

Can you adapt something like this?

https://wagendass.com/en/rectifier/17069-diode-trio-for-alternator-delco-remy-1100072-1100073-1100075-1100076-1100077.html

[Sparkrite]

Thank you JCB, your wealth of knowledge never ceases to amaze me.