BIG STU Posted May 14, 2019 Share Posted May 14, 2019 Hi everyone. I was just wondering if anyone could help me out. I went for a drive yesterday in my 77 coupe and noticed that the battery light on the voltage gauge was lit slightly. On but dim. The voltage was showing fine on the needle. The battery is fully charged and fairly new plus my Altornator was fully refurbished a couple of months back and only done about 50 miles . Plus what voltage are the bulbs that are fitted in the instrument panel. Are the small capless ones 1.2v And the bigger capless bulbs 3v. As my oil pressure bulb doesn't seem to be working. But the gauge is. Any help and advice would be greatly appreciated as always 😉 Cheers Stuart. 👍 Quote Link to comment Share on other sites More sharing options...
Sutty2006 Posted May 15, 2019 Share Posted May 15, 2019 Check your earths are all clean. Quote Link to comment Share on other sites More sharing options...
cam.in.head Posted May 15, 2019 Share Posted May 15, 2019 Hi. If the light is a constant dim glow rather than varies with revs check all earths especially engine strap and the actual alternator little brown earth wire.as mr sutty says .i would also check the battery terminals too to be sure.and the other alternator wires especially the thinner one next to the blue /white one. if all is well under the bonnet and you find that the ign light glows more when you turn more things on I would check the ignition switch connector for a good 12v feed and return.if the glow and the voltmeter varies a lot by moving the key a fraction either way suspect dirty contacts inside ignition switch. as regards the oil light the wires on the actual sender are in a very hot and hard to reach area and often become loose.touching an earth wire to one will prove the light is ok .( there is a connector further up the bulkhead)and touching the other will hold the gauge at zero. the bulbs are indeed 1.2 w and the larger ones 3w .(if you replace the ignition light make sure its definately a 3w 12 volt not smaller ,) 1 Quote Link to comment Share on other sites More sharing options...
cam.in.head Posted May 16, 2019 Share Posted May 16, 2019 Hi .for some reason I can’t reply to your other post regarding gearbox front oil seal.i assume you realise it’s a gearbox out job but leaving the bell housing on the engine makes it much easier.just 4 bolts to remove and box slides out .you will need to make or buy a gasket .see Haynes book. its actually unusual for them to leak. Make sure box isn’t over filled and that the breather on the top is not blocked up. Quote Link to comment Share on other sites More sharing options...
BIG STU Posted May 16, 2019 Author Share Posted May 16, 2019 Will do. It's only loosing a bit But a bit is too much in my opinion. It's the only seal that I didn't replace when I overhauled it a few years back. Typical. ....😠 Any ides where I could get one from if I need one 😕 Quote Link to comment Share on other sites More sharing options...
cam.in.head Posted May 17, 2019 Share Posted May 17, 2019 No not personally but in all my years of mk1’s never had one leak there. It would show as a drip from the tin plate . maybee someone on here has one or can source one from gm dealer network . Quote Link to comment Share on other sites More sharing options...
BIG STU Posted May 20, 2019 Author Share Posted May 20, 2019 Cheers matey. I really appreciate your help and support. It is leaking from the tin plate between the engine and box.😠 If anyone has got a spare seal I would be happy to buy it off you.😉 Quote Link to comment Share on other sites More sharing options...
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