[Healeys] Tonight's Wiring Dilemma

[gradea1 at charter.net]

Lucas being Lucas, there were many versions of similar parts...mostly
to avoid inventory taxes. They still got caught. However, the 2
overdrive relays 33177 were the same part number from chassis 138031
to 228046 when they then went to one relay-same number. Then the
screws mounting the unit were changed but not the relay itself. All
Healeys used the exact same part above. There were similar relays:
33217 and 33204 used on different cars that could look the same, but
maybe had there terminals in different locations. You should always
check the stamped part number and DATE on all Lucas parts prior to
installing them to be sure they are for your car. Regards, Hank

	-----------------------------------------From: "john harper" 
To: "Michael MacLean"
Cc: "Healeys"
Sent: Thursday January 21 2021 5:50:15AM
Subject: Re: [Healeys] Tonight's Wiring Dilemma

 Michael 
 I have not checked the circuit diagram that you use but you would
better to use those in the workshop manual. The BN1 version shows the
wiring to two overdrive relays and the centrifugal switch and to the
wiring to the overdrive. BN2 version has far less wiring. There are
also differences between the two, around the flasher unit.  
 On Thu, 21 Jan 2021 at 05:28, Michael MacLean  wrote:
  As you can see in the two photos I am trying to connect the
overdrive relay to the wiring harness. Tonight's problem is not with
the color coding of the wires. It is the markings on the relay. I have
included a shot of my wiring diagram to illustrate. In the diagram the
connections on the relay should be W1, W2, C1 and C2. As you can see
on the relay it is clearly marked W1, W2, C2 and C3. I'm confused
enough with trying to wire this car as it is. Having mismarked
components doesn't help. Just so you know, the wiring diagram in the
original service manual shows the same as my color coded diagram.
Wrong relay? Maybe mistaken relay. At first I thought so, but I have
two overdrive relays and they are marked the same. I have been buying
parts over several years and have duplicated purchase during a sale
not knowing I bought the same part even cheaper a few years before. So
who is wrong, the diagram (I doubt it) or the part?  Mike MacLean

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