Vauxhall Astra any advice with the corect part nember & ident code for the 3 pin bottom radiator fan switch

HELLO
I AM AFTER SOME ADVICE AND HELP - PLEASE -- PLEASE -- PLEASE
MY CAR IS A ( 1997 - R - Reg)
Reg. Date: 15 Sep 1997
Vauxhall Astra Arctic 1.6 16 Valve Automatic + with Air - Conditioning ' - 5 Door Hatchback -- Engine Code - X16XEL- Ecotec Engine.

My Astra may be a 14 year old Car ---IT Looks Like A New Car For its Year
IT is in all round First Class Top Condition with very low Miles & Very well Cared for & Looked After (& No Expence Spared)
QUESTION ? Any advice with the corect Part Nember & Ident Code for the 3 pin bottom radiator fan switch

I'M AFTER AN 'ORIGINAL GM' ROUND 3 TERMINALS / PINS BOTTOM RADIATOR FAN SWITCH --- NOT A COMPATIBLE ONE
I RANG MY LOCAL 'VAUXHALL DEALER'S'
THE LOCAL VAUXHALL DEALER ASK ME TO LET THEM TAKE A LOOK --
THEY DID A FREE 15 MIN' DIAGNOSTIC TEST
TECH REPORT(1)
Carried out Free 15 Min' Diagnostic Test inspection on arrival & Found the Problem very very quickly

THERE FINDINGS - WERE THAT THE ROUND 3 TERMINALS / PINS RADIATOR FAN SWITCH WAS FAULTY AND NEEDED CHANGING

(AND MY ASTRA WAS FITTED WITH A COMPATIBLE ROUND 3 TERMINALS / PINS RADIATOR FAN SWITCH A LONG TIME AGO - WHICH I ALREADY KNEW )

AFTER TESTING THE ' LOCAL VAUXHALL GARAGE' TOLD ME
( IT WILL NEED -- A ROUND 3 TERMINALS / PINS BOTTOM RADIATOR FAN SWITCH --- WITH LETTER CODE'S 'EITHER' ---- 'WM - WQ - WG - or WF' )

PLUS THEY COULD NOT TELL ME THE CORRECT PART NUMBER EITHER --- FOR THE ROUND 3 TERMINALS / PINS BOTTOM RADIATOR FAN SWITCH
THEY COULD NOT TELL ME WHICH SWITCH I NEEDED --- BECAUSE IT WAS A COMPATIBLE 3 PIN ROUND BOTTOM RADIATOR FAN SWITCH WHICH HAD NO LETTER CODES
!!!!!!!!!!!!
SO I ASKED THEM WHICH ONE IS --- THE RIGHT ORIGINAL GM - ROUND 3 TERMINALS / PINS ROUND BOTTOM RADIATOR FAN SWITCH'
THERE ANSWER ---- THEY COULD NOT AVISE ME

ALL I WAS ADVISED THEY GAVE ME --- WAS TO GO TO CAR BREAKERS YARDS AND TRY TO FIND THE SAME MAKE OF ASTRA AND FIND THE RIGHT GM SWITCH LETTER CODE
OR ASK OTHER GARAGES IF THEY KNEW -- WHAT IS THE RIGHT SWITCH FOR MY ASTRA
AS MY CAR WAS 1997 MODEL ASTRA ---- ORIGINAL PARTS WERE HARD TO FIND PLEASE CAN YOU ADVISE OR HELP ME WITH THE CORRECT ROUND 3 TERMINALS / PINS BOTTOM RADIATOR FAN SWITCH' FOR MY ASTRA - PLEASE - PLEASE
OR DO YOU KNOW WHO I CAN CONTACT TO FIND OUT
REGARDS JIM