Hi, I’m looking for the wiring diagram for a PA20a. Specifically I just need to know which of the posts on the back are 12v+, Ground, and SPKs.
Thanks!
Thanks!
PA20a wiring
- Thread starter Ejr8117
- Start date
I'm casting thread resurrection on this.. I have 2 PA20a sirens I am working on, this wiring diagram is either wrong or flipped.
Serials are a D and E variant.
The wiring schematic is for series B.
Anyone got any other ideas?
Serials are a D and E variant.
The wiring schematic is for series B.
Anyone got any other ideas?
The wiring diagram appears on PDF pages 7, 8, and 9. The schematic on PDF page 19, however, shows the red and black reversed:
So this is the pinout of my 2 devices. Hence why I said flipped.
I opened the one up, and I am cleaning it out.. I may need to get a meter on it, but neither of the above wiring pinouts are correct.
Vertical Pin in the upper left I believe is + as it appears to be going to the fuse. Vertical Pin lower left could possibly be ground, but I cannot confirm that yet.
I opened the one up, and I am cleaning it out.. I may need to get a meter on it, but neither of the above wiring pinouts are correct.
Vertical Pin in the upper left I believe is + as it appears to be going to the fuse. Vertical Pin lower left could possibly be ground, but I cannot confirm that yet.
But in both wiring diagramms red goes to Pin 1 and black to Pin 2
one drawing is up side down.
Seems to me only mirror-inverted - I think the wiring diagrams show the termination assignment viewed from the outside (rear) and not from the inside.
There are two versions of the PA20A:
The B, C, and D series (c. late 1960s) have deep slow rising wail and yelp tones.
The E series (c. 1970s) has fast rising high pitched wail and yelp tones.
Wiring should be the same for both versions.
The B, C, and D series (c. late 1960s) have deep slow rising wail and yelp tones.
The E series (c. 1970s) has fast rising high pitched wail and yelp tones.
Wiring should be the same for both versions.