Bongo Fury

Hi - The Bongo (early 1997 SGL3 diesel) has been in SORN for a few months, and I plan to tax it again tomorrow. While testing the lights I noticed the headlights weren't working on dip or high beam, although the passing light (high beam when pulling the stalk forward worked). This caused me to check the relays, and it seems that the headlight relay is faulty. I've got 3 relays on the passenger side under the bonnet, but I'm having trouble working out what they are. One is the headlight, another appears to be the indicators, and I'm guessing the third one is aircon? Anyway, I swapped the headlight relay for the aircon relay (aircon doesn't work anyway) and headlights now work.

I want to get a replacement relay (just in case its not the aircon I'm using) but I'm not sure what the spec is. The clip on housing for the relay is still in the rubber cover, attached to the relay bracket (I couldn't figure out how to remove it), so I can't see the markings. With a little research I think they are either H270 or H300. The only difference I can see between them is that the relay bracket clip is in a different place. Can anyone confirm if all 3 relays are the same spec, and if so, if they are H270 or H300?
Many thanks.

The mechanical parts diagrams show both H270 and H300 for all those relays see here http://www.lushprojects.com/bongopartsm ... f03.html#8

Thanks Geoff, I saw that diagram, but it didn't make a lot of sense to me. I guess it's listing 5 alternatives (well, 4, because 2 are the same) for the same relay? As I'm unclipping and discarding the housing before popping it in the waterproof boot I suppose it doesn't make any difference if I get the H270 or H300.
Rgds