anybody good w/ Honda radio electrical?

[stmotorsports]

so if I were trying to put a '99 Odyssey radio into a '91 Accord, I know the '91 is a positive-dimmer type circuit but the '99 has 2 seperate circuits for illumination and dimmer. Unfortunately I don't have access to an Odyssey ETM and I'd rather not just wire the circuit up to see what happens...

anyone?

 

[neonmike]

pretty sure both are positive circuits. a quick way to check is to put a 3 amp fuse in line with the wire and if it blows the fuse you know it cannot be used. that is how i test when i dont have access to a manual.