4-pin vs 5-pin headlight washer relay on my '79 SC

[maninblack]

Anyone dealt with the 4-pin vs 5-pin headlight washer relay issue on these cars?

The part listed in the PET, on Pelican, everywhere for these cars from '74 on is 928.618.111.00. That part is a 5-pin relay and, according to everything I've read, it is correct for some of the cars. But the original relay in my car is a 4-pin relay. It's a Hella part # 5WD 002789-00. The 5-pin relay will not work in my car.

Anyone dealt with this or have a source for the correct relay for my car?

[kcf7z]

I did a search and found this unanswered post.

I have the same question as I am trying to get the headlight washer system functional on my 79 930.

I have a 4 pin relay the same as the original post but the pelican and all other source replacement is a 5 pin.

I have googled and gone to the local auto parts store to see if they have an alternative. Is there a good way to test the relay or rebuild it if I cannot find a replacement, or does anyone have an idea what to use in its place?

Hella's online catalogue shows no 4 pin headlight washer relays - all 5 pins

[john walker's workshop]

The center terminal is just another 87 terminal, 87A. If the circuit doesn't use it, it doesn't matter.

[kcf7z]

Thank you so much.

Will the spade plug then in the center just slide between the other connectors allowing engagement into the plugs?