firstoldsmobile

I'm having a hard time finding a circuit board for my 79 Hurst Olds. I don't know who sells them. The biggest thing is I dont have a clue on the interchangeability. Would other GM Gbody cars circuit boards work? Would other Cutlass circuit boards work? This is causing me a standstill to say the least. Thanks for anyones expertise because I dont know. Cory

svnt442

Are you talking about the one for the gauges?

firstoldsmobile

Yeah the thin plastic circuit board.

joe_padavano

OK, it really isn't necessary to post the same question THREE different times.

edzolz

I do not do this but I have had it done in the past. Find a local electronics repair shop and have them repair your circuit using jumper wire and with solder, connect each circuit with that wire. It is time consuming but it works and you probably will not find a good circuit board that works without buying the entire gage package.

joe_padavano

It would help to know exactly what's wrong with the original circuit board. If you can solder, repairs to breaks in the traces are simple. If the problem is a loose pin, these can sometimes be re-soldered. Alternately, people have replaced broken pins with a small screw and nut successfully.

firstoldsmobile

I did find out that a 78-88 gauge cluster with the ralley pack is exactly the same on all Cutlasses so I assume the circuit board would be the same, BUT I was informed that the part is no longer available from vendors which is mind boggling considering how many 81-88 Cutlasses were sold. So fixing mine is probably the ONLY option.

svnt442

Most don't have the ralley cluster so that is part of the issue. Also the 78 through early 80 clusters are different because those cars didn't come with a computer so there was no provision for the check engine light.

firstoldsmobile

Your probably right, but I know the picture of a 79 Hurst Olds - 84 Hurst Olds or any other Cutlass Supreme - Calais that did have that dash cluster looks identical.

RandyS

Joe, as usual, is correct. Almost any circuit board can be repaired unless it is missing a critical piece. But, don't try to do those repairs with your industrial strength soldering gun. You will probably end up creating more damage than you correct.

Octania

If they made millions, you can probably get another one that works.

Can you read a PN or whatnot on yours?

I have a gage set I am sick of looking at, and would sell for dirt cheap and/or sell any part off it. Probably not the GAGES gage set though, probably the granny car dash.

Post pix and/or PN that can be seen.

svnt442

Octania they are not interchangeable.

88hurstolds

THEY ARE INTERCHANGEABLE.
My parts manual shows the same PN used from 78-88.
The check engine light and ECM have nothing to do with the circuit board.
On connector 2 there is about 11 empty pin slots and on the board there are the same amount of corresponding empty light sockets for GM to do whatever they wanted with those. If you look at the light card it has some wacky features like water in fuel, knock, low fuel etc. that are not used what-so-ever. Those light cards changed through the years too...

If you are having gauge problems it's 90% likely NOT the flexible circuit board itself unless it's physically cut... Gauge problems stem from the pins in both connectors not making sufficient connection. Just fluff up the pins and be done with it... if that doesn't solve it check continuity in the wiring. Also make sure the small nuts holding the flex circuit are not loose either...

Again, the issue is almost NEVER the circuit board, gauges or senders themselves but the connection between the flex circuit and pin connections.

This topic has been beaten like a dead horse on multiple forums over the years... a simple Google search should have helped with your issue.