I'm wondering if anyone can tell me if I'm on to something with the following idea:

Relay 1 (the transmission switch) would be a SPDT

86 - from transmission
30 - from battery
87a - N/C
87 - N/O power to lights
85 - ground

Relay 2 would be for the cab switch and is a SPST

86 - from switch
30 - from N/C (87a) of relay 1
87 - N/O power to lights
85 - ground

My idea goes like this - generally the cab switch is off (N/O) and the lights are only generally triggered by the transmission switch. If the 86 on relay 1 is NOT energized the power from 30 (#1) goes through 87a (#1) and heads to 30 (#2) and stops and is available for user input from cab switch. If 86 (#1) is energized (Closed) then the power 30 (#1) runs through 87 (#1) and powers the lamps. If the cab switch (relay 2) is used when the truck is in reverse it wouldn't matter because it is already energized but should the transmission go back to neutral (open switch) then the power would be as explained above and now go from 30 (#2) and travel through 87 (#2) and power the lamps.

So, is that the right idea? Please let me know if I'm on to something as this is all a bit too confusing for me. -

Wyatt Earp's Sig:

Wyatt Earp
2002 Dodge CTD, 6spd, 4x4 LWB, QC, SLT, 354 gears, 150 HP sticks, EDGE Comp, Smarty Box, FASS 150.150, FP, Boost, Pyro on A-Pillar, Ring MIA, AFE STG 2 w/sock, Custom fuel heater, 4" MBRP SS Cool Duals w/ 5" tips, Trailer brakes, Custom lights, Carrier springs, DSS, Lukes Links, 285 Toyo M/T's, Sony deck, changer, MD player, Rockford speakers

what lights r you talkin about? -

2500HeavyDuty's Sig:

MBRP 5"
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sorry, oem rev lamps as well as aux tail lamps. want them to either all 4 come on with switch or with stick shift. -

you are on the right track i will try and draw up a diagram today some time and make sure it will work but it all sounds good about the way i have mine done -

jdugie123's Sig:

04.5 D/A MBRP 4" cool duals with muffler delete, volant air intake, EFI Live, Edelbrock 1792 fuel pump, suncoast level IV, ATS copilot, nicktane fuel filter, 6" RCD, 37" BFG KM2s, 4.56 gears, bushwacker cutout fenders

I have a sketch just no way currently of getting up on line. -

I've got a bosch relay guide that I picked up from somewhere. It's too big to attach to the message, but I might be able to e-mail it to you. It's 3.5MB. It's a real good guide, lots of nifty ideas as well. -

AndyMan's Sig:

1999 2500 QC/LB Pictures 4x4 NV-5600 4.10's, Full FASS Setup, Edge HOT Juice/Attitude, Custom Zoom VT clutch, Bilsteins, DSS, DT Trackbar, Silverline 409 Exhust, BHAF, Jacobs E-Brake, Weatherguard 117-5-01 saddle box, XRF Ball Joints

PROUD 2007 Diesel Bombers FASS winner

Andy,

send it to me devon.wyatt@telus.net

Thanks. -

Done sir. If you don't get it let me know.

Thanks,
Andy -

Got it. I looked at it and can't find an example of what I'm trying to do. I will need to look closer I think.


thanks again. -

Yeah, there may or may not be an example of exactly what you're after, but there are some really good examples and informaiton in there. -

It's a great little book but I'm just not smart enough to figure it out on my own... I need an example of something similar. Thanks for the help though. -

haha. I understand. If I can figure out any way to help, I'll do it. I'm no relay expert myself, but there is certainly a way. -

I mean I can do it, and I understand the basics, well probably more than the basics. It's just when you start talking about cathodes and diodes and such - I mean, woooow, slow down there tex, if you know what I mean.

Anyway, I will keep digging and I'm sure something will happen. -

diodes are good for pranks -

ya it sucks and most of the time its a trial and error learning process with this stuff -